Pub Date : 2022-01-01DOI: 10.1590/1984-70332022v22n2a13
B. L. Carvalho, A. T. Bruzi, Ramsey Lewis, J. Pádua, M. A. P. Ramalho
: This study estimated the general and specific combining abilities and mean heterosis of tobacco lines of the varietal groups Flue-Cured Virginia (FCV) and Air-Cured Burley (BY). In addition, possible advantages and an improved strategy of using hybrids in tobacco breeding in the tropics were discussed. Ten BY and 13 FCV lines were crossed in a diallel mating design. The hybrids and parental lines were evaluated at two locations in Southern Brazil. The mean heterosis was 5.37% for FCV and zero for BY lines, although higher than 15% in some combinations. The occurrence of heterosis indicates dominance in the control of tobacco yield. Tobacco breeding programs must focus primarily on improving the performance of lines per se and then on the identification of the best hybrid by testing combinations.
{"title":"Exploitation of heterosis in tobacco breeding in Brazil","authors":"B. L. Carvalho, A. T. Bruzi, Ramsey Lewis, J. Pádua, M. A. P. Ramalho","doi":"10.1590/1984-70332022v22n2a13","DOIUrl":"https://doi.org/10.1590/1984-70332022v22n2a13","url":null,"abstract":": This study estimated the general and specific combining abilities and mean heterosis of tobacco lines of the varietal groups Flue-Cured Virginia (FCV) and Air-Cured Burley (BY). In addition, possible advantages and an improved strategy of using hybrids in tobacco breeding in the tropics were discussed. Ten BY and 13 FCV lines were crossed in a diallel mating design. The hybrids and parental lines were evaluated at two locations in Southern Brazil. The mean heterosis was 5.37% for FCV and zero for BY lines, although higher than 15% in some combinations. The occurrence of heterosis indicates dominance in the control of tobacco yield. Tobacco breeding programs must focus primarily on improving the performance of lines per se and then on the identification of the best hybrid by testing combinations.","PeriodicalId":10763,"journal":{"name":"Crop Breeding and Applied Biotechnology","volume":"1 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67262333","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 : 2022-01-01DOI: 10.1590/1984-70332022v22n2a18
Ana Kelly S. Maia, Jackeline Terto, I. F. Oliveira, W. F. Nascimento, Cícero Almeida, Edson Ferreira da Silva
Hancornia speciosa Gomes, a native fruit tree, plays an important socio-economic role in Brazil’s traditional communities. The objective was to estimate the genetic structure of 176 individuals from eight locations in the Cerrado, Caatinga and Atlantic Forest biomes, based on six microsatellite markers. The analyzes revealed the formation of five population groups: APernambuco, Paraíba and Sergipe (Atlantic Forest), BMaranhão (Cerrado); both, var. speciosa, CBahia (Caatinga / Cerrado transition zone) and Ceará (Caatinga), DGoiás (Cerrado) and EMinas Gerais (Cerrado,) being groups C, D and E possibly var. pubescens. Most of the genetic variation is within the groups (65.61%, Fst = 0.34, p <0.001). Although group A had the highest Ho (0.66), it had a negative fixation index (f = -0.02), while the other had positive values. Our results revealed high levels of genetic diversity and provide support the development of more efficient conservation strategies for H. speciosa.
{"title":"Genetic diversity and structure of Hancornia speciosa Gomes populations characterized by microsatellites markers","authors":"Ana Kelly S. Maia, Jackeline Terto, I. F. Oliveira, W. F. Nascimento, Cícero Almeida, Edson Ferreira da Silva","doi":"10.1590/1984-70332022v22n2a18","DOIUrl":"https://doi.org/10.1590/1984-70332022v22n2a18","url":null,"abstract":"Hancornia speciosa Gomes, a native fruit tree, plays an important socio-economic role in Brazil’s traditional communities. The objective was to estimate the genetic structure of 176 individuals from eight locations in the Cerrado, Caatinga and Atlantic Forest biomes, based on six microsatellite markers. The analyzes revealed the formation of five population groups: APernambuco, Paraíba and Sergipe (Atlantic Forest), BMaranhão (Cerrado); both, var. speciosa, CBahia (Caatinga / Cerrado transition zone) and Ceará (Caatinga), DGoiás (Cerrado) and EMinas Gerais (Cerrado,) being groups C, D and E possibly var. pubescens. Most of the genetic variation is within the groups (65.61%, Fst = 0.34, p <0.001). Although group A had the highest Ho (0.66), it had a negative fixation index (f = -0.02), while the other had positive values. Our results revealed high levels of genetic diversity and provide support the development of more efficient conservation strategies for H. speciosa.","PeriodicalId":10763,"journal":{"name":"Crop Breeding and Applied Biotechnology","volume":"1 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67262372","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 : 2022-01-01DOI: 10.1590/1984-70332022v22n2c15
Bana Venkata Ravi Prakash Reddy, K. Vishnuvardhan, D. Kalyani, Y. Reddy
: NDLH 2051-1 has a mean seed cotton yield potential of 1590 kg ha -1 and has been singled out for commercial cultivation in the south and central zones of India by the Regional Agricultural Research Station, Nandyal, India. This cultivar represents an essential contribution to sustainable cotton produc tion in India. adaptable to the rainfed agricultural system. The program focuses on yield, fiber quality, and biotic and abiotic stress tolerance ability. The variety NDLH 2005-4 (Nandyal Hirsutum 2005-4) was developed with a mean seed cotton yield potential of (1380 kg ha -1 ) and sucking pest tolerance with mean jassid injury grade (2.2), jassids/3 leaves (8.1), white flies/3 leaves (12.2), and aphids/3 leaves (48.7). To improve productivity, it is essential to develop cultivars with more significant yield potential, better fiber traits, and higher pest and disease tolerance than the existing varieties. Considering the importance of production and productivity of cotton crop in India under rainfed farming, the presen tstudy was undertaken to develop acultivar with high-yield potential, superior fiber traits, and biotic and abiotic stress tolerance suitable for rainfed conditions in India. We report a new variety, NDLH 2051-1 (Nandyal Hirsutum 2051-1), that possesses high mean seed cotton yield, high-quality fiber traits, and sucking pest tolerance to jassids, whiteflies, thrips, and aphids. This cultivar represents a fundamental contribution to cotton production in India’s central and southern zones.
{"title":"NDLH 2051-1: a high-yield, sucking pest-tolerant cultivar of cotton","authors":"Bana Venkata Ravi Prakash Reddy, K. Vishnuvardhan, D. Kalyani, Y. Reddy","doi":"10.1590/1984-70332022v22n2c15","DOIUrl":"https://doi.org/10.1590/1984-70332022v22n2c15","url":null,"abstract":": NDLH 2051-1 has a mean seed cotton yield potential of 1590 kg ha -1 and has been singled out for commercial cultivation in the south and central zones of India by the Regional Agricultural Research Station, Nandyal, India. This cultivar represents an essential contribution to sustainable cotton produc tion in India. adaptable to the rainfed agricultural system. The program focuses on yield, fiber quality, and biotic and abiotic stress tolerance ability. The variety NDLH 2005-4 (Nandyal Hirsutum 2005-4) was developed with a mean seed cotton yield potential of (1380 kg ha -1 ) and sucking pest tolerance with mean jassid injury grade (2.2), jassids/3 leaves (8.1), white flies/3 leaves (12.2), and aphids/3 leaves (48.7). To improve productivity, it is essential to develop cultivars with more significant yield potential, better fiber traits, and higher pest and disease tolerance than the existing varieties. Considering the importance of production and productivity of cotton crop in India under rainfed farming, the presen tstudy was undertaken to develop acultivar with high-yield potential, superior fiber traits, and biotic and abiotic stress tolerance suitable for rainfed conditions in India. We report a new variety, NDLH 2051-1 (Nandyal Hirsutum 2051-1), that possesses high mean seed cotton yield, high-quality fiber traits, and sucking pest tolerance to jassids, whiteflies, thrips, and aphids. This cultivar represents a fundamental contribution to cotton production in India’s central and southern zones.","PeriodicalId":10763,"journal":{"name":"Crop Breeding and Applied Biotechnology","volume":"1 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67261995","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 : 2022-01-01DOI: 10.1590/1984-70332022v22n4a37
R. O. Batista, Leila Lourenço Furtado, J. Carneiro, P. Carneiro, A. Nicoli, L. B. Sousa, A. B. Evaristo
{"title":"Inheritance of resistance to Fusarium wilt in the carioca grain type common bean","authors":"R. O. Batista, Leila Lourenço Furtado, J. Carneiro, P. Carneiro, A. Nicoli, L. B. Sousa, A. B. Evaristo","doi":"10.1590/1984-70332022v22n4a37","DOIUrl":"https://doi.org/10.1590/1984-70332022v22n4a37","url":null,"abstract":"","PeriodicalId":10763,"journal":{"name":"Crop Breeding and Applied Biotechnology","volume":"1 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67262745","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 : 2022-01-01DOI: 10.1590/1984-70332022v22n2a23
Matheus Perek, G. Hodge, E. Tambarussi, Fabricio A Biernaski, J. Acosta
{"title":"Predicted genetic gains for growth traits and wood resistance in Pinus maximinoi and Pinus tecunumanii","authors":"Matheus Perek, G. Hodge, E. Tambarussi, Fabricio A Biernaski, J. Acosta","doi":"10.1590/1984-70332022v22n2a23","DOIUrl":"https://doi.org/10.1590/1984-70332022v22n2a23","url":null,"abstract":"","PeriodicalId":10763,"journal":{"name":"Crop Breeding and Applied Biotechnology","volume":"1 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67261950","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 : 2022-01-01DOI: 10.1590/1984-70332022v22n2a11
L. Téllez, A. Chávez, Pastor E. Pérez-Estigarribia, Magaliz Reyes, C. Cazal, Adam F. Heesacker, M. Kohli
Wheat blast disease is responsible for severe production losses. The disease resistance associated with the 2NS/2AS translocation is effective, but its level can be variable. In this study, we evaluated the presence of 2NS/2AS translocation in 310 advanced breeding lines from six crosses (Caninde 2/Milan, Milan/Caninde 2, Maringa/Milan, Milan/Maringa, Ciano79/Milan and Milan/ Ciano79), and also studied their wheat blast reaction in the field to three virulent pathogen strains (P13-009, P14-031 and P14-039) collected in Paraguay. Advanced lines of two crosses (Caninde 2/Milan and Milan/Caninde 2) yielded the highest number of blast-resistant entries without 2NS/2AS translocation. Earlier studies have shown Caninde 2 to be a moderately susceptible line, which in combination with Milan, is probably adding non-2NS/2AS type resistance to these crosses. Our result indicates that such a resistance is based on several additive factors derived from multiple sources, which need to be explored further and also used to develop more durable wheat blast-resistant germplasm in the future.
{"title":"Caninde2/Milan: promising wheat line to discover novel genes for resistance to wheat blast","authors":"L. Téllez, A. Chávez, Pastor E. Pérez-Estigarribia, Magaliz Reyes, C. Cazal, Adam F. Heesacker, M. Kohli","doi":"10.1590/1984-70332022v22n2a11","DOIUrl":"https://doi.org/10.1590/1984-70332022v22n2a11","url":null,"abstract":"Wheat blast disease is responsible for severe production losses. The disease resistance associated with the 2NS/2AS translocation is effective, but its level can be variable. In this study, we evaluated the presence of 2NS/2AS translocation in 310 advanced breeding lines from six crosses (Caninde 2/Milan, Milan/Caninde 2, Maringa/Milan, Milan/Maringa, Ciano79/Milan and Milan/ Ciano79), and also studied their wheat blast reaction in the field to three virulent pathogen strains (P13-009, P14-031 and P14-039) collected in Paraguay. Advanced lines of two crosses (Caninde 2/Milan and Milan/Caninde 2) yielded the highest number of blast-resistant entries without 2NS/2AS translocation. Earlier studies have shown Caninde 2 to be a moderately susceptible line, which in combination with Milan, is probably adding non-2NS/2AS type resistance to these crosses. Our result indicates that such a resistance is based on several additive factors derived from multiple sources, which need to be explored further and also used to develop more durable wheat blast-resistant germplasm in the future.","PeriodicalId":10763,"journal":{"name":"Crop Breeding and Applied Biotechnology","volume":"1 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67262268","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 : 2022-01-01DOI: 10.1590/1984-70332022v22n4a48
D. Bisognin, K. H. Lencina, Henrique Piton Greff, T. Tonetto, Denise Gazzana
{"title":"Progeny evaluation and early selection for plant height in Acacia mearnsii improve genetic gains","authors":"D. Bisognin, K. H. Lencina, Henrique Piton Greff, T. Tonetto, Denise Gazzana","doi":"10.1590/1984-70332022v22n4a48","DOIUrl":"https://doi.org/10.1590/1984-70332022v22n4a48","url":null,"abstract":"","PeriodicalId":10763,"journal":{"name":"Crop Breeding and Applied Biotechnology","volume":"1 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67262435","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 : 2022-01-01DOI: 10.1590/1984-70332022v22n4a44
Roxane do Carmo Lemos, J. Pádua, A. T. Bruzi, Vando Braz de Oliveira, M. A. P. Ramalho
{"title":"Comparison between doubled haploid lines and lines obtained via the bulk method in tobacco","authors":"Roxane do Carmo Lemos, J. Pádua, A. T. Bruzi, Vando Braz de Oliveira, M. A. P. Ramalho","doi":"10.1590/1984-70332022v22n4a44","DOIUrl":"https://doi.org/10.1590/1984-70332022v22n4a44","url":null,"abstract":"","PeriodicalId":10763,"journal":{"name":"Crop Breeding and Applied Biotechnology","volume":"1 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67262823","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 : 2022-01-01DOI: 10.1590/1984-70332022v22n4a46
B. Rodrigues, S. Nietsche, S. Pimenta, M. C. Pereira
{"title":"Molecular marker-assisted selection for seedlessness in atemoya breeding","authors":"B. Rodrigues, S. Nietsche, S. Pimenta, M. C. Pereira","doi":"10.1590/1984-70332022v22n4a46","DOIUrl":"https://doi.org/10.1590/1984-70332022v22n4a46","url":null,"abstract":"","PeriodicalId":10763,"journal":{"name":"Crop Breeding and Applied Biotechnology","volume":"1 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67262881","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 : 2022-01-01DOI: 10.1590/1984-70332022v22n1a08
Nelson Enrique Casas-Leal, F. A. C. Pereira, N. Vello
Human consumption of vegetable soybeans is increasing, and consequently, breeding programs need to be encouraged and optimized. Therefore, there is a need to understand the relationship between the traits evaluated in the R6 (full seed) and R8 (full maturity) stages and estimate genetic divergence. At two sites and two crop seasons, we evaluated 42 progenies (F6 generation) from crosses between vegetable soybean genotypes and three commercial cultivars. In general, we found significant coincident correlations between environments. Positive and significant correlations between pod width (PWR6) and hundredseed weight (HSW) and between PWR6 and hundred-pod weight (HPW) suggest the possibility of replacing the labor-intensive process of obtaining HSW and HPW by estimating PWR6, which is faster and easier to apply. The unweighted pair-group method arithmetic average analysis allocated soybean genotypes into six major clusters. Furthermore, information from the present work may guide practical actions in breeding programs.
{"title":"Improvement of vegetable soybean: genetic diversity and correlations of traits between immature and mature plants","authors":"Nelson Enrique Casas-Leal, F. A. C. Pereira, N. Vello","doi":"10.1590/1984-70332022v22n1a08","DOIUrl":"https://doi.org/10.1590/1984-70332022v22n1a08","url":null,"abstract":"Human consumption of vegetable soybeans is increasing, and consequently, breeding programs need to be encouraged and optimized. Therefore, there is a need to understand the relationship between the traits evaluated in the R6 (full seed) and R8 (full maturity) stages and estimate genetic divergence. At two sites and two crop seasons, we evaluated 42 progenies (F6 generation) from crosses between vegetable soybean genotypes and three commercial cultivars. In general, we found significant coincident correlations between environments. Positive and significant correlations between pod width (PWR6) and hundredseed weight (HSW) and between PWR6 and hundred-pod weight (HPW) suggest the possibility of replacing the labor-intensive process of obtaining HSW and HPW by estimating PWR6, which is faster and easier to apply. The unweighted pair-group method arithmetic average analysis allocated soybean genotypes into six major clusters. Furthermore, information from the present work may guide practical actions in breeding programs.","PeriodicalId":10763,"journal":{"name":"Crop Breeding and Applied Biotechnology","volume":"1 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67261616","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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