Study of Genetic Diversity in Maize (&amp;lt;i&amp;gt;Zea mays&amp;lt;/i&amp;gt; L.) Inbreds

Matin, Mohammad Quamrul Islam; Rasul, Md. Golam; Islam, A. K. M. Aminul; Mian, M. A. K.; Ivy, Nasrin Akter; Ahmed, Jalal Uddin

doi:10.11648/j.plant.20170502.11

Cited by 4 publications

(1 citation statement)

References 2 publications

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“…[16] classified five in divergence of maize inbreds, [17] six clusters of sixty four maize inbreds, [18] seven clusters of thirty nine maize genotypes, [19] nine clusters of forty three maize inbred line [20] seven cluster of thirty nine bread wheat genotypes. Similarly some other authors such as [21] [22] [23] mentioned similar findings in their studies.…”

Section: Resultsmentioning

confidence: 99%

Genetic Diversity for Yield and Yield Contributing Characters of Short Statured Maize Inbred Lines

Billah¹,

Hassan²,

Matin³

et al. 2021

AJPS

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Genetic diversity is one of the useful tools to select appropriate lines for hybridization. Twenty short-statured maize inbred lines were taken for present study, which were collected from CIMMYT India and Mexico through Plant Breeding Division, Bangladesh Agricultural Research Institute (BARI), Gazipur. This experiment was conducted from November 2015 to April 2016 to identify parental lines to produce single cross short statured maize hybrids. From the genetic diversity studies, the importance of both additive and non-additive gene actions for the expression of yield and yield contributing characters were found. Values of vector I and II revealed that both the vectors had positive values for date of silking, plant height, rows/cob, grains/row and yield. These results indicated that these five characters had highest contribution towards divergence. Based on the relative magnitude of D 2 values; 20 inbred lines were grouped into five clusters. Seven inbred lines were selected on the basis of genetic diversity and per se performance which will be crossed separately in a half-diallel fashion to develop hybrids.

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Section: Resultsmentioning

confidence: 99%

Genetic Diversity for Yield and Yield Contributing Characters of Short Statured Maize Inbred Lines

Billah¹,

Hassan²,

Matin³

et al. 2021

AJPS

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RETRACTED: Variability among maize (Zea mays L.) inbred lines for agro- morphological traits

Shrestha,

Ghimire,

Dhakal

et al. 2023

Preprint

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Variability analysis of maize inbred lines enables increased genetic gain in the maize breeding program. During spring to summer season (March to July) of 2022, we conducted a field experiment in Rampur, Chitwan, Nepal, where we evaluated 24 inbred lines of maize in α-lattice design with three replications to study genetic variability for growth and yield traits. The results of this study showed that growth and yield traits were subject to significant phenotypic and genotypic variation. The anthesis-silking interval (ASI) had the highest genotypic coefficient of variation (39.28%) and phenotypic coefficient of variation (42.81%) in comparison to other traits. Thousand-kernel weight was found to have 87% broad-sense heritability, while as ASI had 91% broad-sense heritability. The grain yield had the highest genetic advance (GA) value, which was followed by leaf area (86.21%). Four inbred line clusters were made using the Euclidean Average Linkage technique. The maximum distance (722.37) between cluster centroids in the cluster analysis suggests that clusters 2 and 4 had the greatest genetic dissimilarity. Inbred RML-76 (2262.2 kg ha-1) and RML-17 (2069.94 kg ha-1) produced the highest grain yields, respectively. The correlation analysis between grain yield and the number of kernel rows per ear (r = 0.79**), the number of kernels per kernel row (r = 0.79**), the length of the ear (r = 0.77**), and the thousand grain weight (r = 0.76**) was positive and significant.The results of our study suggested that maize productivity can be increased by utilizing genetic variability and indirect selection for traits with a high correlation to grain yield, high heritability, and high GA.

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Combining Ability and Heterosis of Algerian Saharan Maize Populations (Zea mays L.) for Tolerance to No-Nitrogen Fertilization and Drought

et al. 2021

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Drought and low nitrogen are major stresses for maize (Zea mays L.), and maize populations from the Sahara Desert are potential sources of stress tolerance. The objectives were to assess the tolerance and varietal and heterosis effects of Algerian populations under no-nitrogen fertilization and water stress. A diallel among six Algerian maize population was evaluated under drought (300 mm irrigation) vs. control (600 mm) and no-nitrogen fertilization vs. 120 kh ha−1 N fertilization. Genotypes showed significant differences and genetic effects for water- and nitrogen-stress tolerance. We propose a reciprocal recurrent selection to take advantage of additive and non-additive effects, using AOR and IGS, since they showed good performance in optimum and stress conditions, for improving yield heterosis for AOR × IGS. Negative effects are not expected on plant height, anthesis–silking interval or early vigor. These populations and BAH could be sources of inbred lines tolerant to drought and no-nitrogen fertilization. There was no relationship between origin and genetic group and stress tolerance per se or as parents of tolerant crosses. These populations and crosses could be used as base material among Algerian populations, for breeding programs focusing on tolerance to water or nitrogen stress.

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Study of Genetic Diversity in Maize (<i>Zea mays</i> L.) Inbreds

Cited by 4 publications

References 2 publications

Genetic Diversity for Yield and Yield Contributing Characters of Short Statured Maize Inbred Lines

Genetic Diversity for Yield and Yield Contributing Characters of Short Statured Maize Inbred Lines

RETRACTED: Variability among maize (Zea mays L.) inbred lines for agro- morphological traits

Combining Ability and Heterosis of Algerian Saharan Maize Populations (Zea mays L.) for Tolerance to No-Nitrogen Fertilization and Drought

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