Developing New Dry Bean Lines by Selection

Hamed, A. A.

doi:10.12816/0003931

Cited by 2 publications

(4 citation statements)

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“…These results are in accordance with the findings of Costa et al (2010), Wasonga et al (2010), Hamed (2012) and Hamed and Muhanna (2017) who indicated the possibility of selecting new common bean lines with high yield.…”

Section: Performance Of the Selected Linessupporting

confidence: 93%

“…A total of 47 common bean breeder-selected lines in F8 generation as well as three commercial cultivars namely Giza 6, Karnak and Nebraska (Table 1) were used in this study. The entries promising lines originated from breeding programs of dry bean, Horticultural Research Institute, ARC, Egypt (Abdel-Ati et al 2000 andHamed 2012). These lines were chosen based on earliness, high yield and seeds quality.…”

Section: Methodsmentioning

confidence: 99%

“…Development of high yielding cultivars with resistance to major bean diseases is an important breeding priority to reduce impact of diseases and increase common bean production. Also, Costa et al (2010), Wasonga et al (2010), Hamed (2012) and Hamed and Muhanna (2017) indicated the possibility of selecting homogenous new common bean lines with high yield.…”

Section: Introductionmentioning

confidence: 99%

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Selection for Some Economic Characters and Southern Blight Resistance in Dry Bean

Abdellaha

Hamda

2023

Scientific Journal of Agricultural Sciences

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during the period from 2021 to 2022. The current study aimed to determine the genetic variability and heritability of dry bean (Phaseolus vulgaris L.) genotypes for some economic characters and develop new promising resistant lines to Sclerotium rolfsii Sacc, causative of root rot and stem rot. Forty-seven new lines of dry bean developed from previous breeding programs as well as three commercial cultivars, i.e., Giza 6, Karnak and Nebraska were used in this study. The results exhibited that the large portion of phenotypic variance (σ 2 p) was due to the genetic variance (σ 2 g). Furthermore, estimated broadsense heritability showed high values (64 to 96%) in all traits, indicating that the observed significant phenotypic differences among the studied genotypes are of genetic nature and there are small environmental effects on the phenotypic variation. Therefore, these characters can be improved through selection based on phenotypic observations in early segregating generations in dry bean. Screening of studied genotypes for Sclerotium rolfsii resistance was carried out under controlled conditions. The obtained results showed that genotype D 6 recorded the highest level of resistance displaying the lowest disease severity percentage against S. rolfsii infection with 6.7%, followed by genotypes D 40, D 39, D 42 and D 46 with mean disease severity 20%. Furthermore, data revealed that five genotypes were resistant, 10 genotypes were moderately resistant, 13 genotypes were moderately susceptible, 19 genotypes were susceptible and three genotypes were highly susceptible. The selected lines D 30-4 and D 36-2, promising lines could be considered for certification. It had high productivity and good dry yield quality. Meanwhile, the lines D 6 and D 42 are promising lines for resistance to S. rolfsii infection with good productivity.

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Section: Performance Of the Selected Linessupporting

confidence: 93%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Selection for Some Economic Characters and Southern Blight Resistance in Dry Bean

Abdellaha

Hamda

2023

Scientific Journal of Agricultural Sciences

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“…A variety is considered more adaptive or stable if it has a high mean of yield with low degree of fluctuation in yield ability for growing over different locations or seasons (Eberhart and Russell, 1966). Some researchers showed differences between bean cultivars for growth and productivity (Hamed, 2012;Mandour, 2014 They showed that there were significant differences between cultivars, genotypes regarding plant growth and productivity of seeds.…”

Section: Introductionmentioning

confidence: 99%