The study was carried out to develop an efficient, reproducible method to overcome the drought stress and increasing agriculture field crisis of Bangladesh. Banglaponics, a soilless cultivation technique comprised of traditional agricultural fertilizers in pond water mixed with cow urine has been used to evaluate the efficiency of tomato production. The production rate (237.85 ± 10.87 g/plant) was significantly (p < 0.05) higher in the Banglaponics medium than soil medium. Plant height, leaf number, leaf area, root number, root length, and flower number of the studied plant showed significantly (p < 0.05) higher in Banglaponics medium than plants grown in soil. Both treatments showed that chlorophyll score and antioxidant activity (DPPH) were almost equal. Banglaponically grown plant leaf, despite having lower Ca concentrations, possessed higher concentrations of Fe and Zn than those of soil-grown. Additionally, Banglaponically grown plant also showed significantly much lower Pb concentrations than that of grown in soil. On the contrary the other two heavy metals Cr and Cd, hold nearly the same value. By appearance, Banglaponically-grown plants were much healthier than that of soil-grown. This technique can be introduced in drought-prone areas of Bangladesh as it requires much less water than soil-grown tomato plants. Bangladesh J. Bot. 52(4): 933-939, 2023 (December)
{"title":"Banglaponics: A Soilless Cultivation Technique For Tomato In Bangladesh","authors":"Masuma Khatun, Md Mizanur Rahman, Tabibur Rahman, Sabrina Naz","doi":"10.3329/bjb.v52i4.70574","DOIUrl":"https://doi.org/10.3329/bjb.v52i4.70574","url":null,"abstract":"The study was carried out to develop an efficient, reproducible method to overcome the drought stress and increasing agriculture field crisis of Bangladesh. Banglaponics, a soilless cultivation technique comprised of traditional agricultural fertilizers in pond water mixed with cow urine has been used to evaluate the efficiency of tomato production. The production rate (237.85 ± 10.87 g/plant) was significantly (p < 0.05) higher in the Banglaponics medium than soil medium. Plant height, leaf number, leaf area, root number, root length, and flower number of the studied plant showed significantly (p < 0.05) higher in Banglaponics medium than plants grown in soil. Both treatments showed that chlorophyll score and antioxidant activity (DPPH) were almost equal. Banglaponically grown plant leaf, despite having lower Ca concentrations, possessed higher concentrations of Fe and Zn than those of soil-grown. Additionally, Banglaponically grown plant also showed significantly much lower Pb concentrations than that of grown in soil. On the contrary the other two heavy metals Cr and Cd, hold nearly the same value. By appearance, Banglaponically-grown plants were much healthier than that of soil-grown. This technique can be introduced in drought-prone areas of Bangladesh as it requires much less water than soil-grown tomato plants. Bangladesh J. Bot. 52(4): 933-939, 2023 (December)","PeriodicalId":8703,"journal":{"name":"Bangladesh Journal of Botany","volume":" 852","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139136650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Vanipraveena, S. Talekar, R. Kachapur, S. R. Salakinkop, Patlolla Ramakanth Reddy
Forty two experimental hybrids generated through full diallel mating were evaluated in Randomized Block Design during kharif 2019 to study the magnitude of heterosis in sweet corn. Mid-parent heterosis ranged from -21 to 258 for DEW; -25 to 2 for GFW; 3 to 229 for GEY and standard heterosis ranged from 2.13 to 134.95 for DEW; 82.93 to 317.07 for GFW; -15.70 to 68.40 for GEY. Green ear yield exhibited positive significant correlation of mid-parent and commercial heterosis with NKPR, DEW and GFW in common, while no significant association between GEY and TSS was observed. The crosses KH1831 × SC Syn, SC Syn × SC Sel 2 and SC Sel 2 × SC Syn manifested highest mid-parent heterosis for de-husked ear weight, green ear yield and green fodder weight thus utilizing these hybrids in breeding programmes will serve for dual purpose of yield with fodder. Bangladesh J. Bot. 52(4): 999-1005, 2023 (December)
为研究甜玉米的杂交程度，在 2019 年种植季节，采用随机区组设计对通过全二倍体交配产生的 42 个实验杂交种进行了评估。DEW的中间亲本异交率为-21至258；GFW为-25至2；GEY为3至229；DEW的标准异交率为2.13至134.95；GFW为82.93至317.07；GEY为-15.70至68.40。绿穗产量与 NKPR、DEW 和 GFW 的中亲本异交率和商业异交率呈显著正相关，而 GEY 与 TSS 之间无显著相关。杂交种 KH1831 × SC Syn、SC Syn × SC Sel 2 和 SC Sel 2 × SC Syn 在去壳穗重、绿穗产量和青饲料重量方面表现出最高的亲本中间异交性，因此，在育种计划中利用这些杂交种可实现产量和饲料的双重目的。孟加拉国植物学杂志52(4):999-1005，2023 年（12 月）
{"title":"Development of heterotic hybrids of sweet corn for green ear yield and other component traits","authors":"M. Vanipraveena, S. Talekar, R. Kachapur, S. R. Salakinkop, Patlolla Ramakanth Reddy","doi":"10.3329/bjb.v52i4.70582","DOIUrl":"https://doi.org/10.3329/bjb.v52i4.70582","url":null,"abstract":"Forty two experimental hybrids generated through full diallel mating were evaluated in Randomized Block Design during kharif 2019 to study the magnitude of heterosis in sweet corn. Mid-parent heterosis ranged from -21 to 258 for DEW; -25 to 2 for GFW; 3 to 229 for GEY and standard heterosis ranged from 2.13 to 134.95 for DEW; 82.93 to 317.07 for GFW; -15.70 to 68.40 for GEY. Green ear yield exhibited positive significant correlation of mid-parent and commercial heterosis with NKPR, DEW and GFW in common, while no significant association between GEY and TSS was observed. The crosses KH1831 × SC Syn, SC Syn × SC Sel 2 and SC Sel 2 × SC Syn manifested highest mid-parent heterosis for de-husked ear weight, green ear yield and green fodder weight thus utilizing these hybrids in breeding programmes will serve for dual purpose of yield with fodder. Bangladesh J. Bot. 52(4): 999-1005, 2023 (December)","PeriodicalId":8703,"journal":{"name":"Bangladesh Journal of Botany","volume":"59 9","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139132654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Burmese grape (Baccaurea sapida Muell. Arg.) belongs to the family Euphorbiaceae, is a minor underexploited fruit crop grown wild as well as under cultivation in Nepal, India, Myanmar, Bangladesh, China, Thailand, for fresh consumption. It is a dioecious plant and reported to have an excellent nutritive value, but mainly grown in homestead condition mostly in neglected ways. The present study was aimed to characterize the germplasm nature, details of flowering and fruiting system of Burmese grape. Tree growth habit and crown shape of all the accessions surveyed were semi erect and irregular, respectively. The colour of the male flowers varied from yellow to green yellow shades while the colour of the female flowers varied from yellow to yellow green and green yellow shades. The variation present on fruit length (2.81 cm to 3.80 cm), fruit weight (12.25g to 22.95g), pulp percentage (49.82% to 65.33%), total soluble solids (9.00º to 13.10ºBrix), tritatable acidity (0.73mg to 1.28mg/100g fruit pulp) and ascorbic acid content ranged from (23.18mg to 57.80mg/100g fruit pulp) suggest suitable selection method for identification of promising Burmese grape genotypes. Bangladesh J. Bot. 52(4): 989-998, 2023 (December)
{"title":"Flowering, fruiting and germplasm characterization of burmese grape (baccaurea sapida muell. Arg.)","authors":"Nilesh Bhowmick, S. Pradhan","doi":"10.3329/bjb.v52i4.70581","DOIUrl":"https://doi.org/10.3329/bjb.v52i4.70581","url":null,"abstract":"Burmese grape (Baccaurea sapida Muell. Arg.) belongs to the family Euphorbiaceae, is a minor underexploited fruit crop grown wild as well as under cultivation in Nepal, India, Myanmar, Bangladesh, China, Thailand, for fresh consumption. It is a dioecious plant and reported to have an excellent nutritive value, but mainly grown in homestead condition mostly in neglected ways. The present study was aimed to characterize the germplasm nature, details of flowering and fruiting system of Burmese grape. Tree growth habit and crown shape of all the accessions surveyed were semi erect and irregular, respectively. The colour of the male flowers varied from yellow to green yellow shades while the colour of the female flowers varied from yellow to yellow green and green yellow shades. The variation present on fruit length (2.81 cm to 3.80 cm), fruit weight (12.25g to 22.95g), pulp percentage (49.82% to 65.33%), total soluble solids (9.00º to 13.10ºBrix), tritatable acidity (0.73mg to 1.28mg/100g fruit pulp) and ascorbic acid content ranged from (23.18mg to 57.80mg/100g fruit pulp) suggest suitable selection method for identification of promising Burmese grape genotypes. Bangladesh J. Bot. 52(4): 989-998, 2023 (December)","PeriodicalId":8703,"journal":{"name":"Bangladesh Journal of Botany","volume":"119 27","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139133236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Nandan L. Patil, G Shanthakumar, BD Biradar, Lakshmi R. Gangavati
Water stress during flowering stage is a key factor effecting maize productivity in India. Mahalanobis D2 method was used to group one hundred and thirty-three inbred lines based on their phenotypic performance under waters stress condition. Fifteen selected lines were crossed in half diallel fashion to produce 105 direct F1 crosses which were then evaluated under water stress and non-stress condition. Negative correlation was observed between parents mahalanobis distance and grain yield suggesting parents with diverse phenotypic expression need not always produce heterotic hybrids. Mid-parent heterosis showed linear relationship with grain yield and none of the combining ability effects showed significant association with grain yield. Thus, per se performance of inbred lines across the traits under water stress situation has to be considered in selection of parents for production of heterotic hybrids. Bangladesh J. Bot. 52(4): 915-923, 2023 (December)
{"title":"Role of genetic diversity and combining ability and heterosis in maize (zea mays l.) Hybrids under drought stress","authors":"Nandan L. Patil, G Shanthakumar, BD Biradar, Lakshmi R. Gangavati","doi":"10.3329/bjb.v52i4.70572","DOIUrl":"https://doi.org/10.3329/bjb.v52i4.70572","url":null,"abstract":"Water stress during flowering stage is a key factor effecting maize productivity in India. Mahalanobis D2 method was used to group one hundred and thirty-three inbred lines based on their phenotypic performance under waters stress condition. Fifteen selected lines were crossed in half diallel fashion to produce 105 direct F1 crosses which were then evaluated under water stress and non-stress condition. Negative correlation was observed between parents mahalanobis distance and grain yield suggesting parents with diverse phenotypic expression need not always produce heterotic hybrids. Mid-parent heterosis showed linear relationship with grain yield and none of the combining ability effects showed significant association with grain yield. Thus, per se performance of inbred lines across the traits under water stress situation has to be considered in selection of parents for production of heterotic hybrids. Bangladesh J. Bot. 52(4): 915-923, 2023 (December)","PeriodicalId":8703,"journal":{"name":"Bangladesh Journal of Botany","volume":"123 22","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139134960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In the present study the genotype x environment interaction and stability performances of 15 rice landraces in Rabi season during 2017-18 to 2021-22 at Agricultural Research Station, Tamil Nadu Agricultural University, Tamil Nadu, India were evaluated. Eberhart - Russel model was used for stability analysis in rice. In this model, genotype mean across environments, regression of genotype on environmental index and function of the squared deviation from the regression were determined. Mean sum of squares against environment source of variation as well as linear component of environment were significant for all the studied characters suggesting a presence of variation among the environments tested. The linear component of genotype x environment interaction was also found significant for all the traits studied which indicated presence of significant differences between the genotypes. The landraces Kallurundaikar and Kattanur responded favourably to better environments but gave poor yield in an unfavourable environment. Hence, they are suitable for favourable environments. Sivappuchithiraikar and Mysore malli recorded the highest grain yield with bi value closer to unity and non-significant deviation from regression. They were reported as stable genotypes and recommended for cultivation in southern districts of Tamil Nadu. Bangladesh J. Bot. 52(4): 941-948, 2023 (December)
{"title":"Stability analysis in rice landraces grown under dry Direct seeded condition","authors":"S Muthuramu","doi":"10.3329/bjb.v52i4.70575","DOIUrl":"https://doi.org/10.3329/bjb.v52i4.70575","url":null,"abstract":"In the present study the genotype x environment interaction and stability performances of 15 rice landraces in Rabi season during 2017-18 to 2021-22 at Agricultural Research Station, Tamil Nadu Agricultural University, Tamil Nadu, India were evaluated. Eberhart - Russel model was used for stability analysis in rice. In this model, genotype mean across environments, regression of genotype on environmental index and function of the squared deviation from the regression were determined. Mean sum of squares against environment source of variation as well as linear component of environment were significant for all the studied characters suggesting a presence of variation among the environments tested. The linear component of genotype x environment interaction was also found significant for all the traits studied which indicated presence of significant differences between the genotypes. The landraces Kallurundaikar and Kattanur responded favourably to better environments but gave poor yield in an unfavourable environment. Hence, they are suitable for favourable environments. Sivappuchithiraikar and Mysore malli recorded the highest grain yield with bi value closer to unity and non-significant deviation from regression. They were reported as stable genotypes and recommended for cultivation in southern districts of Tamil Nadu. Bangladesh J. Bot. 52(4): 941-948, 2023 (December)","PeriodicalId":8703,"journal":{"name":"Bangladesh Journal of Botany","volume":"38 8","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139131392","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jasneet Kaur, Surinder K Sandhu, I. Rialch, Manpreet Singh, Karanveer Kaur, L. Pal
Heat stress during the post anthesis (seed filling) stage negatively influences the movement of photosynthates to the developing sinks and, thus lowering the seed yield in Indian mustard [Brassica juncea (L.) Czern & Coss]. The present studywas conducted with the objective to unravel the variability for terminal heat stress (THS) in a fixed diversitygenetic stock of 500 lines of Indian mustard. Germplasm stock exhibited huge variability for seed yield and its contributing traits with variable levels of yield reduction under late sown conditions. The per se yield based computed heat stress susceptibility index (HSI) ranged from 32.3 (highly THS susceptible) to -1.15 (THS tolerant). Based on yield reduction due to THS, 500 test genotypes were grouped into 10 classes and genotypes from each class wererandomly takento constitute a diverse panel of 96 lines. This panel was evaluated under THS by raising crop underpoly-tunnels during reproductive phase along with same set of 96 genotypes raised under normal field conditions (served as control). Based on agronomic advantage and HSI for economic traits, 23 heat tolerant donor lines were selected for utilization in commercial breeding programme. Bangladesh J. Bot. 52(4): 1007-1013, 2023 (December)
{"title":"Selection of heat tolerant donor lines in indian mustard (Brassica Juncea L.)","authors":"Jasneet Kaur, Surinder K Sandhu, I. Rialch, Manpreet Singh, Karanveer Kaur, L. Pal","doi":"10.3329/bjb.v52i4.70584","DOIUrl":"https://doi.org/10.3329/bjb.v52i4.70584","url":null,"abstract":"Heat stress during the post anthesis (seed filling) stage negatively influences the movement of photosynthates to the developing sinks and, thus lowering the seed yield in Indian mustard [Brassica juncea (L.) Czern & Coss]. The present studywas conducted with the objective to unravel the variability for terminal heat stress (THS) in a fixed diversitygenetic stock of 500 lines of Indian mustard. Germplasm stock exhibited huge variability for seed yield and its contributing traits with variable levels of yield reduction under late sown conditions. The per se yield based computed heat stress susceptibility index (HSI) ranged from 32.3 (highly THS susceptible) to -1.15 (THS tolerant). Based on yield reduction due to THS, 500 test genotypes were grouped into 10 classes and genotypes from each class wererandomly takento constitute a diverse panel of 96 lines. This panel was evaluated under THS by raising crop underpoly-tunnels during reproductive phase along with same set of 96 genotypes raised under normal field conditions (served as control). Based on agronomic advantage and HSI for economic traits, 23 heat tolerant donor lines were selected for utilization in commercial breeding programme. Bangladesh J. Bot. 52(4): 1007-1013, 2023 (December)","PeriodicalId":8703,"journal":{"name":"Bangladesh Journal of Botany","volume":"68 26","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139130752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A pot experiment was conducted to study the effect of vermicompost (VC), potassium (K) and boron (B) on the growth, yield and mineral nutrient accumulation of eggplant (Solanum melongena L.). Eight treatments were arranged in a completely randomized design (CRD) with three replications including control. Application of VC8K60 (T5) resulted in the highest plant height (60 cm). However, VC8K60B0.4 (T8) recorded the maximum leaf number (17 plant-1), leaf area (264 cm2), fruit petiole (4.15 plant-1), fruit number (3.50 plant-1), total fresh (143.15 g plant-1) and dry weight (16.4 g plant-1). Application of VC8K60B0.4 (T8) helped the improvement of the N, P, K, S, Fe and Zn concentrations of the roots, leaves and fruits. Result of growth, yield attributes and nutrient content varied significantly (p ≤ 0.05). Hence, to achieve higher fruit yield with higher nutrient concentration the soil should be supplied with vermicompost, muriate of potash (50% K) and boric acid (17% B) at a required rate. However, for a good recommendation field trials are needed in major agroecosystems of the country. Bangladesh J. Bot. 52(4): 959-964, 2023 (December)
{"title":"Nutritional and agronomic response of eggplant (solanum melongena l.) To the application of vermicompost, potassium and boron","authors":"N. Akter, Mahmud Syed, Md Khalilur Rahman","doi":"10.3329/bjb.v52i4.70577","DOIUrl":"https://doi.org/10.3329/bjb.v52i4.70577","url":null,"abstract":"A pot experiment was conducted to study the effect of vermicompost (VC), potassium (K) and boron (B) on the growth, yield and mineral nutrient accumulation of eggplant (Solanum melongena L.). Eight treatments were arranged in a completely randomized design (CRD) with three replications including control. Application of VC8K60 (T5) resulted in the highest plant height (60 cm). However, VC8K60B0.4 (T8) recorded the maximum leaf number (17 plant-1), leaf area (264 cm2), fruit petiole (4.15 plant-1), fruit number (3.50 plant-1), total fresh (143.15 g plant-1) and dry weight (16.4 g plant-1). Application of VC8K60B0.4 (T8) helped the improvement of the N, P, K, S, Fe and Zn concentrations of the roots, leaves and fruits. Result of growth, yield attributes and nutrient content varied significantly (p ≤ 0.05). Hence, to achieve higher fruit yield with higher nutrient concentration the soil should be supplied with vermicompost, muriate of potash (50% K) and boric acid (17% B) at a required rate. However, for a good recommendation field trials are needed in major agroecosystems of the country. Bangladesh J. Bot. 52(4): 959-964, 2023 (December)","PeriodicalId":8703,"journal":{"name":"Bangladesh Journal of Botany","volume":"27 5","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139131347","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
An experiment was performed to evaluate the effects of grafting and deficit irrigation on yield of melon grown under different water stress conditions. The plant materials used in the study were Ünlü melon grafted on the rootstock of Ferro melon and ungrafted Ünlü melon species. Water was applied at the level of 80, 60 and 40% of the water applied to the full irrigation level (I100=100%). Grafting significantly affected the fruit number of the plants. The fruit number in the ungrafted applications was higher than that in the grafted applications. Effects of grafting application and irrigation level on fruit weight was significant. The fruit weight in the ungrafted applications was higher than that in the grafted applications. Outcome indicated that there was no significant loss in yield, fruit number, or fruit weight of melons under application of 20% water deficit to the plants. Findings also revealed that the amount of irrigation water for melon cultivation can be safely reduced by 20% under Mediterranean climate conditions. Bangladesh J. Bot. 52(4): 925-932, 2023 (December)
{"title":"Impact of grafting and deficit irrigation on yield of melon (cucumis melo l.)","authors":"Ö. Özbek, H. Kaman","doi":"10.3329/bjb.v52i4.70573","DOIUrl":"https://doi.org/10.3329/bjb.v52i4.70573","url":null,"abstract":"An experiment was performed to evaluate the effects of grafting and deficit irrigation on yield of melon grown under different water stress conditions. The plant materials used in the study were Ünlü melon grafted on the rootstock of Ferro melon and ungrafted Ünlü melon species. Water was applied at the level of 80, 60 and 40% of the water applied to the full irrigation level (I100=100%). Grafting significantly affected the fruit number of the plants. The fruit number in the ungrafted applications was higher than that in the grafted applications. Effects of grafting application and irrigation level on fruit weight was significant. The fruit weight in the ungrafted applications was higher than that in the grafted applications. Outcome indicated that there was no significant loss in yield, fruit number, or fruit weight of melons under application of 20% water deficit to the plants. Findings also revealed that the amount of irrigation water for melon cultivation can be safely reduced by 20% under Mediterranean climate conditions. Bangladesh J. Bot. 52(4): 925-932, 2023 (December)","PeriodicalId":8703,"journal":{"name":"Bangladesh Journal of Botany","volume":"121 37","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139132880","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
C. Dash, M. Afroz, Afsana Hossain, Syeda Sharmeen Sultana, Subroto Kumar Das
Three commercial Citrullus lanatus varieties, namely Sonya, Kanya and Sweet black-2, were investigated with cyto-molecular techniques for characterization. Despite having similar somatic chromosome numbers and karyotype formulae (2n = 22), these three varieties had considerable diversities in Chromomycin A3 (CMA)- and 4′, 6-diamidino-2-phenylindole (DAPI)-banding patterns. The total somatic chromosomal length was longest in Sweet black-2 (71.44 ± 2.94 µm) and shortest in Sonya (42.31 ± 2.45 µm). Each variety's unique GC- and AT-rich chromatin composition was represented by a variety of numbers, percentages, and patterns of distribution. Eleven random primers were employed to evaluate the genetic diversity among three varieties. Each variety showed a distinct fingerprinting pattern with 88.72% polymorphism while having 10 of the same RAPD bands. Bangladesh J. Bot. 52(4): 1033-1040, 2023 (December)
{"title":"Characterization of three citrullus lanatus (thunb.) Matsum. & nakai varieties by fluorescent chromosome staining and rapd analysis","authors":"C. Dash, M. Afroz, Afsana Hossain, Syeda Sharmeen Sultana, Subroto Kumar Das","doi":"10.3329/bjb.v52i4.70598","DOIUrl":"https://doi.org/10.3329/bjb.v52i4.70598","url":null,"abstract":"Three commercial Citrullus lanatus varieties, namely Sonya, Kanya and Sweet black-2, were investigated with cyto-molecular techniques for characterization. Despite having similar somatic chromosome numbers and karyotype formulae (2n = 22), these three varieties had considerable diversities in Chromomycin A3 (CMA)- and 4′, 6-diamidino-2-phenylindole (DAPI)-banding patterns. The total somatic chromosomal length was longest in Sweet black-2 (71.44 ± 2.94 µm) and shortest in Sonya (42.31 ± 2.45 µm). Each variety's unique GC- and AT-rich chromatin composition was represented by a variety of numbers, percentages, and patterns of distribution. Eleven random primers were employed to evaluate the genetic diversity among three varieties. Each variety showed a distinct fingerprinting pattern with 88.72% polymorphism while having 10 of the same RAPD bands. Bangladesh J. Bot. 52(4): 1033-1040, 2023 (December)","PeriodicalId":8703,"journal":{"name":"Bangladesh Journal of Botany","volume":"100 4","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139131672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The present study aims to identify prospective lipase-producing bacteria and optimize different culture parameters to produce maximum lipase. A total of 37 lipase-positive bacteria were isolated from lipid-rich environments. Among them, strains S1N-2 and S10P-1 were found to have potential and were molecularly identified as Stenotrophomonas species ICMM10 and Pseudomonas aeruginosa BA7823, respectively. For maximum lipase production, the optimum pH was 7 and the temperature was 37ºC. Using these conditions, the isolates were grown on media with additional carbon and nitrogen sources along with different inoculum concentrations. The maximum amount of lipase produced by Stenotrophomonas sp. ICMM10 was 136.47 ± 1.63 U/ml, which is 5-fold higher than before. Pseudomonas aeruginosa BA7823 produced a maximum lipase of 96.33 ± 0.21 U/ml, which was about 9-fold higher than before. These results would provide useful information about lipase production by indigenous isolates, which may be employed as a potential bacterial lipase source of biotechnological interest. Bangladesh J. Bot. 52(4): 979-988, 2023 (December)
{"title":"Optimization of cultural parameters for lipase production by indigenous stenotrophomonas sp. And pseudomonas aeruginosa isolated from lipid-rich environments","authors":"Lovely Aktar, M. Saha","doi":"10.3329/bjb.v52i4.70580","DOIUrl":"https://doi.org/10.3329/bjb.v52i4.70580","url":null,"abstract":"The present study aims to identify prospective lipase-producing bacteria and optimize different culture parameters to produce maximum lipase. A total of 37 lipase-positive bacteria were isolated from lipid-rich environments. Among them, strains S1N-2 and S10P-1 were found to have potential and were molecularly identified as Stenotrophomonas species ICMM10 and Pseudomonas aeruginosa BA7823, respectively. For maximum lipase production, the optimum pH was 7 and the temperature was 37ºC. Using these conditions, the isolates were grown on media with additional carbon and nitrogen sources along with different inoculum concentrations. The maximum amount of lipase produced by Stenotrophomonas sp. ICMM10 was 136.47 ± 1.63 U/ml, which is 5-fold higher than before. Pseudomonas aeruginosa BA7823 produced a maximum lipase of 96.33 ± 0.21 U/ml, which was about 9-fold higher than before. These results would provide useful information about lipase production by indigenous isolates, which may be employed as a potential bacterial lipase source of biotechnological interest. Bangladesh J. Bot. 52(4): 979-988, 2023 (December)","PeriodicalId":8703,"journal":{"name":"Bangladesh Journal of Botany","volume":"73 10","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139132296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：