Studies on Genetic Variability Parameters on Grain Yield and Its Yield Attributing Traits in Maize (Zea mays L.)
نویسندگان
چکیده
منابع مشابه
Phenotypic Stability of Zea mays Grain Yield and Its Attributing Traits under Drought Stress
Phenotypic stability under stress environment facilitate the fitness of genotype and opens new horizons to explore the cryptic genetic variation. Variation in tolerance to drought stress, a major grain yield constraint to global maize production, was identified, at the phenotypic and genotypic level. Here we found a prominent hybrid H9 that showed fitness over four growing seasons for grain yie...
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Abstract: Grain yield is a complex phenomenon which results from the interaction of various contributing factors highly influenced by environmental variation. Phenotypic selection cannot directly improve the characters in heterozygous crops like maize unless dissected by genetic analysis. Gene action for various quantitative and qualitative traits was explored in a complete set of diallel invol...
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Frequency changes of alleles at eight enzyme loci were monitored in four long-term maize selection experiments. The results indicate that changes in frequencies of the alleles at these loci are associated with changes due to selection for improved grain yield. The frequencies changed more than is consistent with the hypothesis of selective neutrality. In addition, significant deviations from a ...
متن کاملEstimation of heterosis for grain yield components in Maize (Zea mays L.)
Heterosis plays an important role in achieving improvement in crop production. About 69 F 1 hybrids obtained by crossing twenty three lines and three testers in a line × tester fashion were used to derive the information on degree of heterosis over mid, better and standard parent in maize. Sixty nine crosses and their parents including one check CoH(M)5 were evaluated in a Randomized Block Desi...
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An investigation was conducted to determine the grain yield performance of seventy two single cross maize hybrids, their nine parents and one commercial check across three seasons (Summer, Kharif and Rabi) of the year 2006 at the Department of Millets, Tamil Nadu Agricultural University, Coimbatore. The design lay out was a randomized blocks design with three replications. The additive main eff...
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ژورنال
عنوان ژورنال: International Journal of Current Microbiology and Applied Sciences
سال: 2018
ISSN: 2319-7692,2319-7706
DOI: 10.20546/ijcmas.2018.709.150