Volume 10, Issue 26 (9-2018)                   jcb 2018, 10(26): 104-119 | Back to browse issues page

XML Persian Abstract Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Delfan S, Bihamta M R, Hosein zade A, Sabokdast M. Genetic Diversity in Bean Genotypes (Phaseolus vulgaris L.) under Drought Stress Conditions . jcb. 2018; 10 (26) :104-119
URL: http://jcb.sanru.ac.ir/article-1-725-en.html
Abstract:   (128 Views)

To evaluate genetic diversity and to determine the relationships between yield and other importante traits among bean genotypes, an experiment was conducted in Random Completely Block Design (RCBD) with three repetitions under both normal and drought stress conditions in 2015-2016 crop season on 30 bean genotypes  at Tehran University research farm. The results of variance analysis indicated high variation for the most traits. Based on means comparison, the highest and the lowest  seed yield in both normal and drought conditions belonged to Daneshkadeh genotype. Regression analysis showed, under normal conditions significant relationship between sheath weight related to the number of seeds per plant, harvest index and the plant height, respectively had the highest relation with seed yields and Under stress conditions, significant relationship between sheath weight related to the number of seeds per plant, internode lenght and the day to 50% poding, respectively had the highest relation with seed yields. Factor analysis in normal and drought stress conditions, identified six factors that account for 82.7 and 85.3 percent of variations, respectively. In both conditions, the most variations were to first and second factor, the highest percent of data variation. Then the two to obtain a distribution of genotypes and identify the coordinates were used. Under normal conditions genotypes 13, 16, 12, 6, 27 and 5 and under drought stress genotypes 15, 26, 12, 18, 16 and 29 that the first and second factors were positive and above were selected as superior genotypes. Cluster analysis in both normal and drought stress conditions classified studied genotypes into four groups. The greatest diversity was observed among genotypes for traits. Thus, by selecting and breeding for traits, Increased grain yield per plant.
 

 
 

Full-Text [PDF 1745 kb]   (54 Downloads)    
Type of Study: Research | Subject: Special

Add your comments about this article : Your username or Email:
CAPTCHA code

Send email to the article author


© 2018 All Rights Reserved | Journal of Crop Breeding

Designed & Developed by : Yektaweb