INVESTIGATION ON PATH ANALYSIS OF GRAIN YIELD IN MAIZE HYBRID UNDER NORMAL IRRIGATION AND DROUGHT STRESS CONDITIONS

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JAFARI ABAS; PAKNEJAD F.; JAMI ALAHMADI M.; NASRI M.; ILKAEE M.N.

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Journal: JOURNAL OF CROP PRODUCTION RESEARCH (ENVIRONMENTAL STRESSES IN PLANT SCIENCES) Year:2009 | Volume:1 | Issue:1 Page(s): 1-13

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Title

INVESTIGATION ON PATH ANALYSIS OF GRAIN YIELD IN MAIZE HYBRID UNDER NORMAL IRRIGATION AND DROUGHT STRESS CONDITIONS

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PATH ANALYSISQ2

DROUGHT STRESSQ2

COMQ2

CORRELATIONQ2

HERITABILITYQ2

Abstract

In order to study on maize hybrid cultivars in related to humidity stress and investigation and identify CORRELATIONs between different traits in maize genotypes under research study conducted in North- ,west of Khom province in Shekoohia small city. Number of 20 maize hybrid wereftudied in the base of randomized COMplete blocks design in 4 replications and at two separated experiment under normal humidity condition (irrigation after 30% humidity depletion of water available) and DROUGHT STRESS (irrigation after 60% humidity depletion of available water). Variance analysis of trai-ts in normal and DROUGHT STRESS conditions showed that between investigated traits of maize hybrid were noticeably variant. The highest variant rate among two irrigation conditions related to ASI trait (-51.62). In both of irrigation conditions, HERITABILITY of 1000 seed weight, hectoliter and grain yield were the highest in COMpare to others traits. Study of traits CORRELATION in normal irrigation showed that the yield with traits of hectoliter, 1000 seed weight, row seed number and seed number per row had positive significant CORRELATION. In DROUGHT STRESS condition observed high negative CORRELATION significant and among yield and ASI (-0.83), days to silky flower initiation and days to tassel flower initiation. In the other hand, the yield related to seed number per row (0.82), row seed number per ear (0.75), seed depth and 1000 seed weight showed high positive CORRELATION. Study of the direct and indirect effects in effective traits in normal condition showed that the highest direct effect on grain yield relate to seed row number (0.868). Iin DROUGHT STRESS condition direct effect seed number per row (1.778) and seed number per ear was positive and upper than others and tassel peduncle length as directs effect on grain yield related to traits residual was highest adversely. The ASI traits by reducing seed number per row had High effect in reduction of yield in stress condition indirectly. The results showed that the best ways for grain yield increasing is direct selection for increasing yield COMponents and should be considered specially for selection of tolerant plants to drought relate to reduction of ASI time, days to tassel flower initiation and days to silky flower initiation traits.

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APA: Copy

JAFARI, ABAS, PAKNEJAD, F., JAMI ALAHMADI, M., NASRI, M., & ILKAEE, M.N.. (2009). INVESTIGATION ON PATH ANALYSIS OF GRAIN YIELD IN MAIZE HYBRID UNDER NORMAL IRRIGATION AND DROUGHT STRESS CONDITIONS. JOURNAL OF CROP PRODUCTION RESEARCH (ENVIRONMENTAL STRESSES IN PLANT SCIENCES), 1(1), 1-13. SID. https://sid.ir/paper/182324/en

Vancouver: Copy

JAFARI ABAS, PAKNEJAD F., JAMI ALAHMADI M., NASRI M., ILKAEE M.N.. INVESTIGATION ON PATH ANALYSIS OF GRAIN YIELD IN MAIZE HYBRID UNDER NORMAL IRRIGATION AND DROUGHT STRESS CONDITIONS. JOURNAL OF CROP PRODUCTION RESEARCH (ENVIRONMENTAL STRESSES IN PLANT SCIENCES)[Internet]. 2009;1(1):1-13. Available from: https://sid.ir/paper/182324/en

IEEE: Copy

ABAS JAFARI, F. PAKNEJAD, M. JAMI ALAHMADI, M. NASRI, and M.N. ILKAEE, “INVESTIGATION ON PATH ANALYSIS OF GRAIN YIELD IN MAIZE HYBRID UNDER NORMAL IRRIGATION AND DROUGHT STRESS CONDITIONS,” JOURNAL OF CROP PRODUCTION RESEARCH (ENVIRONMENTAL STRESSES IN PLANT SCIENCES), vol. 1, no. 1, pp. 1–13, 2009, [Online]. Available: https://sid.ir/paper/182324/en

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