Genotypic variability, heritability and path analysis of yield components of determinate lablab (Lablab purpureus (L.) Sweet) inbred lines in Kenya

In the process of plant breeding the application of relevant breeding criteria is very important. The Path analysis is broadly applied with the aim to define yield components that mostly determine the yield and that can be used as quality breeding criteria. However, the significance of revealed relationships between yield and yield components can be affected by various factors, such as diverse genetic material that is observed, traits included into analysis, environments in which the material is observed, as well as, the applied statistic approach to determine the nature of the relationships itself. The interrelationships of yield and yield components of 15 commercial maize hybrids were observed using the Path and factor analyses. According to results of Path analysis, plant height, ear diameter and grain moisture had highly significant genetic and phenotypic direct effects on grain yield. At the same time, factor analysis points out significant effects of two factors on grain yield. Factor 1 was mostly determined by ear length and number of kernels per row, while grain moisture content, ear and cob diameter mostly determined Factor 2.

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GENETIC VARIATION AND PATH ANALYSIS ON AGRONOMIC TRAITS OF RECOMBINANT INBRED LINES IN RICE (Oryza sativa L.).

International Journal of Advanced Research ◽

10.21474/ijar01/6676 ◽

2018 ◽

Vol 6 (3) ◽

pp. 280-291

Author(s):

Myint Aye ◽

◽

NyoMar Htwe ◽

KhinMu Aye ◽

MoeMoeKyi Win ◽

...

Keyword(s):

Genetic Variation ◽

Oryza Sativa ◽

Path Analysis ◽

Recombinant Inbred ◽

Agronomic Traits ◽

Oryza Sativa L ◽

Recombinant Inbred Lines ◽

Inbred Lines

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Path Analysis of Red Rice (Oryza sativaL.) Competition by Cultivated Rice

Weed Science ◽

10.1017/s0043174500057404 ◽

1992 ◽

Vol 40 (2) ◽

pp. 313-319 ◽

Cited By ~ 11

Author(s):

D. J. Pantone ◽

J. B. Baker ◽

P. W. Jordan

Keyword(s):

Grain Yield ◽

Path Analysis ◽

Yield Components ◽

Field Experiments ◽

Weight Percent ◽

Grain Weight ◽

Research Station ◽

Direct Effects ◽

Red Rice ◽

Cultivated Rice

During 1985 to 1989, a series of field experiments were conducted at the Rice Research Station in Crowley, LA. Path analysis was employed to evaluate the competitive interaction between a weed (red rice) and cultivated rice (Mars). The path analysis quantified direct effects of red rice and Mars rice densities on the yield components (grain weight, percent filled florets, number of florets panicle−1, and panicles plant−1) of red rice and Mars rice. The model illustrated the direct and indirect effects of the yield components on fecundity and grain yield plant−1. The direct effects of Mars and red rice densities on panicles plant−1and florets panicle−1were always negative. In contrast, the effects of density on percent filled florets and grain weight varied from positive to negative and were relatively small, implying that they were determined primarily by density-independent factors. Path analysis indicated that the number of panicles plant−1and florets panicle−1were the most important yield components determining the responses of fecundity and grain yield to competition.

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