Correlation and path coefficient analysis of seed yield and yield components of French bean ( Phaseolus vulgaris L.) genotypes in sub-tropical region.

DOI: 10.31220/agriRxiv.2020.00001
Statement: This article is a preprint and has not been peer-reviewed. It reports new research that has yet to be evaluated and so should not be used to guide clinical practice.
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    Abstract: Abstract This research aims to determine the relationship between yield and yield components of French bean using multivariate statistical techniques. The study was conducted at Horticulture Research Station, Dailekh, Nepal for consecutive three year of 2016-2018. In this study, six French bean genotypes were used. The following measurements and observations were made: germination (%), pod length (cm), pod diameter (mm), individual pod weight and number of seeds pod -1 , number of dry pods plant -1 , dry pod yield plant -1 and dry pod yield (t/ha), 100 seed weight (g) and seed yield (t/ha). Highly significant and positive correlation was recorded between seed yield and individual pod weight (r=0.659***), number of seed pod -1 (r=0.548**) and pod length (0.459*). Conversely, pod diameter showed a negative and non-significant (-0.025) correlation on seed yield. Based on simple regression analysis, linear regression of individual pod weight, number of seed pod-1 and pod length leads to an increase in the seed yield (t/ha) by 0.188, 0.285 and 0.103 units respectively. From the path coefficient analysis maximum positive direct effect on seed yield was recorded by number of seeds pod -1 (0.767) followed by 100 seed weight (0.530) and individual pod weight (0.429). Also, stepwise multiple linear regression analysis revealed that three traits including individual pod weight, 100 seed weight and number of dry pod plant -1 with R 2 = 68.22% showed their overall contribution towards seed yield. The rest of the variance (R 2 = 31.78%) was contributed by the variables that were not included in the study. Results concerning four statistical methods showed that individual pod weight appeared to be most effective contributor of seed yield followed by the number of seed pod -1 , 100 seed weight, and pod length. Therefore, attention should be paid to these characters in any breeding program during the selection criteria for improving the seed yield.

    Key words: individual; pod weight; seed yield; pod; pod length; 100 seed weigh

    Submit time: 1 January 2020

    Copyright: The copyright holder for this preprint is the author/funder, who has granted agriXiv a license to display the preprint in perpetuity.
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    1 2020-01-01

    10.31220/agriRxiv.2020.00001V1

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Santosh Kalaun. Correlation and path coefficient analysis of seed yield and yield components of French bean ( Phaseolus vulgaris L.) genotypes in sub-tropical region.. 2020. agriXiv.2020.00001

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