Pub Date : 1999-01-01DOI: 10.1080/14620316.1999.11511151
D. Obenland, M. Arpaia, L. Aung
SummaryThe postharvest quality of nine early-, mid-, and late-season cultivars of California nectarines was determined following forced-air heat treatment used for quarantine disinfestation of Mediterranean fruit fly. The treatment consisted of heating the nectarines to a seed surface temperature of 47.28C for 2 min over a period of 4.h. Nectarines were evaluated after storage at 08C for 14.d and 208C for 4.d, which simulated shipping and sale of the fruit. Surface appearance, indexed by colour measurements and visual ratings, was generally unchanged by heat treatment and would have had no influence on the marketability of the fruit. A detectable change in the chroma of the internal flesh was shown in a number of cultivars, but was imperceptible when rated by visual evaluation. Heat treated fruit were firmer than unheated fruit, but retained the ability to soften. Only minor differences in soluble solids content and titratable acidity between heat treated and untreated control fruit were detected. It was ...
{"title":"Quality of nectarine cultivars subjected to forced-air heat treatment for Mediterranean fruit fly disinfestation","authors":"D. Obenland, M. Arpaia, L. Aung","doi":"10.1080/14620316.1999.11511151","DOIUrl":"https://doi.org/10.1080/14620316.1999.11511151","url":null,"abstract":"SummaryThe postharvest quality of nine early-, mid-, and late-season cultivars of California nectarines was determined following forced-air heat treatment used for quarantine disinfestation of Mediterranean fruit fly. The treatment consisted of heating the nectarines to a seed surface temperature of 47.28C for 2 min over a period of 4.h. Nectarines were evaluated after storage at 08C for 14.d and 208C for 4.d, which simulated shipping and sale of the fruit. Surface appearance, indexed by colour measurements and visual ratings, was generally unchanged by heat treatment and would have had no influence on the marketability of the fruit. A detectable change in the chroma of the internal flesh was shown in a number of cultivars, but was imperceptible when rated by visual evaluation. Heat treated fruit were firmer than unheated fruit, but retained the ability to soften. Only minor differences in soluble solids content and titratable acidity between heat treated and untreated control fruit were detected. It was ...","PeriodicalId":54808,"journal":{"name":"Journal of Horticultural Science & Biotechnology","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"1999-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/14620316.1999.11511151","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60225330","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1999-01-01DOI: 10.1080/14620316.1999.11511156
Z. Ju, Yousheng Duan, Z. Ju
SummaryDifferent concentrations of aminoethoxyvinylglycine (AVG) and gibberellic acid (GA3) and their combinations, applied at two stages of fruit growth, were evaluated for prolonging the marketing season of `Feicheng' peaches. GA3 applied at the end of pit hardening, or AVG applied two weeks before commercial harvest, inhibited fruit maturation on the tree, delayed harvest and reduced flesh browning after cold storage in a concentration-dependent manner. A synergistic effect was found when both GA3 and AVG were used, with the combination of 100 or 150.mg l±1 GA3, applied at the end of pit hardening, and 100 mg l±1 AVG, applied two weeks before harvest giving the best results. These combinations retarded the change in ground colour, loss of firmness, and reduction in acidity by 2±3 weeks. Since harvest was prolonged by 2±3 weeks, soluble solids content (SSC) in fruit increased compared with the control (harvested earlier). Fruit size was significantly greater on treated trees compared with the controls w...
{"title":"Combinations of GA3 and AVG delay fruit maturation, increase fruit size and improve storage life of `Feicheng' peaches","authors":"Z. Ju, Yousheng Duan, Z. Ju","doi":"10.1080/14620316.1999.11511156","DOIUrl":"https://doi.org/10.1080/14620316.1999.11511156","url":null,"abstract":"SummaryDifferent concentrations of aminoethoxyvinylglycine (AVG) and gibberellic acid (GA3) and their combinations, applied at two stages of fruit growth, were evaluated for prolonging the marketing season of `Feicheng' peaches. GA3 applied at the end of pit hardening, or AVG applied two weeks before commercial harvest, inhibited fruit maturation on the tree, delayed harvest and reduced flesh browning after cold storage in a concentration-dependent manner. A synergistic effect was found when both GA3 and AVG were used, with the combination of 100 or 150.mg l±1 GA3, applied at the end of pit hardening, and 100 mg l±1 AVG, applied two weeks before harvest giving the best results. These combinations retarded the change in ground colour, loss of firmness, and reduction in acidity by 2±3 weeks. Since harvest was prolonged by 2±3 weeks, soluble solids content (SSC) in fruit increased compared with the control (harvested earlier). Fruit size was significantly greater on treated trees compared with the controls w...","PeriodicalId":54808,"journal":{"name":"Journal of Horticultural Science & Biotechnology","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"1999-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/14620316.1999.11511156","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60225794","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1999-01-01DOI: 10.1080/14620316.1999.11511167
P. Wilson
SummaryClonal mother plants of Eucalyptus globulus were grown in 10 l pots in a Portuguese nursery and lightly harvested for stem cuttings every 2±4 weeks. Shoot length, within a crown size and across crown sizes, was poorly related to the rooting ability of derivative cuttings. The chronological age of mother plants, at least up to two years, also had little effect on the propagation traits of cuttings, and variation between individual mother plants was generally non-significant. Rooting of cuttings was strongly related to pre-harvest shoot extension rates (cm per shoot per week), the cuttings productivity of mother plants in the previous interval (cuttings per plant per week), and to the reciprocal of a shoot dominance index at harvest (principal shoot length/number of cuttings harvested). These variables were easy to measure and accounted for nearly all of the variation in rooting ability between harvests of cuttings within the clone.
{"title":"The growth and form of potted mother plants of Eucalyptus globulus Labill. ssp. globulus in relation to the rooting ability of stem cuttings","authors":"P. Wilson","doi":"10.1080/14620316.1999.11511167","DOIUrl":"https://doi.org/10.1080/14620316.1999.11511167","url":null,"abstract":"SummaryClonal mother plants of Eucalyptus globulus were grown in 10 l pots in a Portuguese nursery and lightly harvested for stem cuttings every 2±4 weeks. Shoot length, within a crown size and across crown sizes, was poorly related to the rooting ability of derivative cuttings. The chronological age of mother plants, at least up to two years, also had little effect on the propagation traits of cuttings, and variation between individual mother plants was generally non-significant. Rooting of cuttings was strongly related to pre-harvest shoot extension rates (cm per shoot per week), the cuttings productivity of mother plants in the previous interval (cuttings per plant per week), and to the reciprocal of a shoot dominance index at harvest (principal shoot length/number of cuttings harvested). These variables were easy to measure and accounted for nearly all of the variation in rooting ability between harvests of cuttings within the clone.","PeriodicalId":54808,"journal":{"name":"Journal of Horticultural Science & Biotechnology","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"1999-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/14620316.1999.11511167","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60226165","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1999-01-01DOI: 10.1080/14620316.1999.11511168
C. Hole, R. Drew, B. M. Smith, D. Gray
SummaryCarrot roots from a range of environments, developmental stages and cultivars showed variation in splitting susceptibility from 3.8% to 72.5%. Estimates of tissue tensile strength, fracture toughness and residual strain for roots from these sources were not related to estimates for damage. The measurement of release of intrinsic stress from whole-root sections showed some relationship with damage in that the most susceptible cultivars also displayed greater release of stress. These same varieties had larger storage cells in their outer parenchyma. Developmental variation in tissue strength induced by different sowing dates and years was inconsistent between years. Increases in strength of root tissue with advancing date during the autumn observed in field experiments, were not related to temperature changes imposed in controlled environment. Variation in water and solute potentials was generally greater than variation in turgor potential, which remained well conserved in all experiments. Fracture t...
{"title":"Tissue properties and propensity for damage in carrot (Daucus carota L.) storage roots","authors":"C. Hole, R. Drew, B. M. Smith, D. Gray","doi":"10.1080/14620316.1999.11511168","DOIUrl":"https://doi.org/10.1080/14620316.1999.11511168","url":null,"abstract":"SummaryCarrot roots from a range of environments, developmental stages and cultivars showed variation in splitting susceptibility from 3.8% to 72.5%. Estimates of tissue tensile strength, fracture toughness and residual strain for roots from these sources were not related to estimates for damage. The measurement of release of intrinsic stress from whole-root sections showed some relationship with damage in that the most susceptible cultivars also displayed greater release of stress. These same varieties had larger storage cells in their outer parenchyma. Developmental variation in tissue strength induced by different sowing dates and years was inconsistent between years. Increases in strength of root tissue with advancing date during the autumn observed in field experiments, were not related to temperature changes imposed in controlled environment. Variation in water and solute potentials was generally greater than variation in turgor potential, which remained well conserved in all experiments. Fracture t...","PeriodicalId":54808,"journal":{"name":"Journal of Horticultural Science & Biotechnology","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"1999-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/14620316.1999.11511168","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60226224","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1999-01-01DOI: 10.1080/14620316.1999.11511163
Sharry E. Sommer, Shazel Y. Wetzstein, S. L. Brown
SummaryIn addition to supplying valuable cultivars for ornamental uses, dwarf mutant tree forms may present opportunities for studying the genetic control of physiological factors affecting shoot growth. Few studies have addressed the histogenetic role of GA during shoot development, and its effect on cell pattern in mature internodes. Hence, the growth responses of two genetic dwarf sweetgum trees (Liquidambar styraiflua L. cv. Gumball and an unnamed wild dwarf tree) were examined following foliar application of gibberellic acid (GA) to young preformed leaves. Both were GA-responsive mutants and exhibited marked increases in shoot growth following treatment. GA was effective in 1) stimulating subapical meristem activity in preformed internodes which were initiated the previous season, 2) inducing cell divisions in the apical meristem proper to promote the neoformation of leaves and sylleptic lateral branches, and 3) stimulating subapical mitotic activity in neoformed internodes. Histological evaluations ...
除了提供有价值的观赏品种外，矮突变树型可能为研究影响梢生长的生理因素的遗传控制提供机会。很少有研究报道GA在芽发育过程中的组织发生作用及其对成熟节间细胞形态的影响。因此，两种遗传矮化甜树(Liquidambar styraiflua L. cv.)的生长响应。用赤霉素(GA)对预成形幼叶进行叶面施用后，对Gumball和一株未命名的野生矮树进行了研究。这两种突变体都是对ga有反应的突变体，在处理后表现出明显的芽生长增加。GA的作用有:1)刺激前一季开始的预形成节间的尖下分生组织活性;2)诱导顶端分生组织的细胞分裂，促进叶片和分枝的新生;3)刺激新形成节间的尖下有丝分裂活性。组织学评价……
{"title":"SHOOT GROWTH AND HISTOLOGICAL RESPONSE OF DWARF SWEETGUM TO GIBBERELLIN","authors":"Sharry E. Sommer, Shazel Y. Wetzstein, S. L. Brown","doi":"10.1080/14620316.1999.11511163","DOIUrl":"https://doi.org/10.1080/14620316.1999.11511163","url":null,"abstract":"SummaryIn addition to supplying valuable cultivars for ornamental uses, dwarf mutant tree forms may present opportunities for studying the genetic control of physiological factors affecting shoot growth. Few studies have addressed the histogenetic role of GA during shoot development, and its effect on cell pattern in mature internodes. Hence, the growth responses of two genetic dwarf sweetgum trees (Liquidambar styraiflua L. cv. Gumball and an unnamed wild dwarf tree) were examined following foliar application of gibberellic acid (GA) to young preformed leaves. Both were GA-responsive mutants and exhibited marked increases in shoot growth following treatment. GA was effective in 1) stimulating subapical meristem activity in preformed internodes which were initiated the previous season, 2) inducing cell divisions in the apical meristem proper to promote the neoformation of leaves and sylleptic lateral branches, and 3) stimulating subapical mitotic activity in neoformed internodes. Histological evaluations ...","PeriodicalId":54808,"journal":{"name":"Journal of Horticultural Science & Biotechnology","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"1999-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/14620316.1999.11511163","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60226259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1999-01-01DOI: 10.1080/14620316.1999.11511175
A. Kalra, T. Parameswaran, N. Ravindra, H. Singh
SummaryExperiments were conducted during 1993 and 1994 at Bangalore, India, to estimate the reductions in yield of essential oil caused by leaf blight (Colletotrichum gloeosporioides (Penz.) Sacc.) on three geranium (Pelargonium graveolens (L.) Herit) clones. Leaf blight resulted in smaller reductions in oil yield in an Algerian-type (Kd) clone than a Reunion-type (Lo) and an Egyptian-type (Eg) clone. The results indicate that even expensive disease management practices can be recommended for management of leaf blight on the Lo and Eg clones in regions where leaf blight is prevalent, because increases in severity of leaf blight may cause considerable economic loss. Such measures, however, may not be economically viable for the Kd clone.
{"title":"Influence of leaf blight on yields in geranium Pelargonium graveolens","authors":"A. Kalra, T. Parameswaran, N. Ravindra, H. Singh","doi":"10.1080/14620316.1999.11511175","DOIUrl":"https://doi.org/10.1080/14620316.1999.11511175","url":null,"abstract":"SummaryExperiments were conducted during 1993 and 1994 at Bangalore, India, to estimate the reductions in yield of essential oil caused by leaf blight (Colletotrichum gloeosporioides (Penz.) Sacc.) on three geranium (Pelargonium graveolens (L.) Herit) clones. Leaf blight resulted in smaller reductions in oil yield in an Algerian-type (Kd) clone than a Reunion-type (Lo) and an Egyptian-type (Eg) clone. The results indicate that even expensive disease management practices can be recommended for management of leaf blight on the Lo and Eg clones in regions where leaf blight is prevalent, because increases in severity of leaf blight may cause considerable economic loss. Such measures, however, may not be economically viable for the Kd clone.","PeriodicalId":54808,"journal":{"name":"Journal of Horticultural Science & Biotechnology","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"1999-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/14620316.1999.11511175","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60226609","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1999-01-01DOI: 10.1080/14620316.1999.11511182
J. Aramburu, M. Rodríguez
SummaryThe recent commercialization of tomato hybrids resistant to tomato spotted wilt tospovirus (TSWV) in Spain by different seed producer companies has reduced the economic losses caused by this...
{"title":"Evaluation of commercial Lycopersicon esculentum hybrids for resistance to tomato spotted wilt tospovirus (TSWV) in Spain","authors":"J. Aramburu, M. Rodríguez","doi":"10.1080/14620316.1999.11511182","DOIUrl":"https://doi.org/10.1080/14620316.1999.11511182","url":null,"abstract":"SummaryThe recent commercialization of tomato hybrids resistant to tomato spotted wilt tospovirus (TSWV) in Spain by different seed producer companies has reduced the economic losses caused by this...","PeriodicalId":54808,"journal":{"name":"Journal of Horticultural Science & Biotechnology","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"1999-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/14620316.1999.11511182","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60226803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1999-01-01DOI: 10.1080/14620316.1999.11511184
M. Andrés, J. Durán
SummaryThe cold units (CU) and heat units (HU) required for the flowering of 13 apricot cultivars (Prunus armeniaca L.) cultivated in AbaraÂn (Murcia) have been established. The end of the dormancy period was determined on the basis of the dry-weight increase of the flower buds. The tests in which the dry weight was measured after forcing the flower buds at 208C turned out to be more precise in detecting the beginning of the reactivation phase than those in which they were not forced.
{"title":"COLD AND HEAT REQUIREMENTS OF THE APRICOT TREE (PRUNUS ARMENIACA L.)","authors":"M. Andrés, J. Durán","doi":"10.1080/14620316.1999.11511184","DOIUrl":"https://doi.org/10.1080/14620316.1999.11511184","url":null,"abstract":"SummaryThe cold units (CU) and heat units (HU) required for the flowering of 13 apricot cultivars (Prunus armeniaca L.) cultivated in AbaraÂn (Murcia) have been established. The end of the dormancy period was determined on the basis of the dry-weight increase of the flower buds. The tests in which the dry weight was measured after forcing the flower buds at 208C turned out to be more precise in detecting the beginning of the reactivation phase than those in which they were not forced.","PeriodicalId":54808,"journal":{"name":"Journal of Horticultural Science & Biotechnology","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"1999-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/14620316.1999.11511184","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60226935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1999-01-01DOI: 10.1080/14620316.1999.11511186
Y. Nakao, S. Shiozaki, T. Ogata, Shousaku Horiuchi
SummarySeasonal changes in the concentrations of indole-3-acetic acid (IAA) and abscisic acid (ABA) in the endosperm and integument of the ovule of Ginkgo biloba L. were analysed by GC-MS using [d5]-IAA and [d6]-ABA as internal standards. The concentration of IAA in the endosperm increased rapidly during the period of rapid growth, and was closely correlated with the growth rate of the ovule. The concentration of IAA in the integument was much lower than that in the endosperm, but also changed similarly. The concentration of ABA in the endosperm showed a peak after the cessation of rapid growth, and decreased during the fertilization period. The concentration of ABA in the integument also increased after the cessation of rapid growth, though slowly.
{"title":"Changes in indole-3-acetic acid and abscisic acid concentrations during development of the Ginkgo biloba L. ovule","authors":"Y. Nakao, S. Shiozaki, T. Ogata, Shousaku Horiuchi","doi":"10.1080/14620316.1999.11511186","DOIUrl":"https://doi.org/10.1080/14620316.1999.11511186","url":null,"abstract":"SummarySeasonal changes in the concentrations of indole-3-acetic acid (IAA) and abscisic acid (ABA) in the endosperm and integument of the ovule of Ginkgo biloba L. were analysed by GC-MS using [d5]-IAA and [d6]-ABA as internal standards. The concentration of IAA in the endosperm increased rapidly during the period of rapid growth, and was closely correlated with the growth rate of the ovule. The concentration of IAA in the integument was much lower than that in the endosperm, but also changed similarly. The concentration of ABA in the endosperm showed a peak after the cessation of rapid growth, and decreased during the fertilization period. The concentration of ABA in the integument also increased after the cessation of rapid growth, though slowly.","PeriodicalId":54808,"journal":{"name":"Journal of Horticultural Science & Biotechnology","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"1999-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/14620316.1999.11511186","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60227119","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1999-01-01DOI: 10.1080/14620316.1999.11511070
H. Mactavish, R. C. Menary
SummaryThe rates at which flowers reach anthesis on four genetically distinct clones of brown boronia grown at different sites in Tasmania were examined. The yield of flower material per plant and the concentration of extract, total volatiles and b-ionone (% dry weight) were assessed throughout the flowering period via small- and pilot-scale extractions. Organoleptic assessment of absolutes was done. The four clones had similar concentrations of extract when harvested at between 50 and 80% open flowers (1.5–2.0% d.w.). The concentrations of total volatiles and b-ionone were reduced in pilot scale extractions compared with small-scale extractions. Inter- and intra-sample variability was high; there were no significant trends in the concentration of total volatiles or b-ionone in any clone. The yield of dry flower weight per plant varied between clones throughout flowering. Clones No. 3 and No. 5 progress through flowering earlier than clones No. 17 and No. 250. Despite the reduction in extract concentratio...
{"title":"Floral extract from four clones of Boronia megastigma (Nees) throughout flowering","authors":"H. Mactavish, R. C. Menary","doi":"10.1080/14620316.1999.11511070","DOIUrl":"https://doi.org/10.1080/14620316.1999.11511070","url":null,"abstract":"SummaryThe rates at which flowers reach anthesis on four genetically distinct clones of brown boronia grown at different sites in Tasmania were examined. The yield of flower material per plant and the concentration of extract, total volatiles and b-ionone (% dry weight) were assessed throughout the flowering period via small- and pilot-scale extractions. Organoleptic assessment of absolutes was done. The four clones had similar concentrations of extract when harvested at between 50 and 80% open flowers (1.5–2.0% d.w.). The concentrations of total volatiles and b-ionone were reduced in pilot scale extractions compared with small-scale extractions. Inter- and intra-sample variability was high; there were no significant trends in the concentration of total volatiles or b-ionone in any clone. The yield of dry flower weight per plant varied between clones throughout flowering. Clones No. 3 and No. 5 progress through flowering earlier than clones No. 17 and No. 250. Despite the reduction in extract concentratio...","PeriodicalId":54808,"journal":{"name":"Journal of Horticultural Science & Biotechnology","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"1999-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/14620316.1999.11511070","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60219936","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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