Some Genetic Parameters and Path Coefficient of Three-Way Crosses in Maize

Hadi, Banan Hassan; Hassan, Wajeeha Abed; Hamdalla, Majid S.H.

doi:10.1088/1755-1315/910/1/012099

Cited by 3 publications

(5 citation statements)

References 3 publications

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“…The reason for the superiority of the hybrid (4×2) in the highest yield plant -1 is attributed to its superiority in grain weight (Table 9) and the number of grains ear -1 (Table 7). These results are consistent with previous studies of [23,[38][39][40][41].…”

Section: Individual Plant Yieldsupporting

confidence: 94%

“…The superiority of parent 5 in the number of grain rows can be attributed to its superiority in both the traits of number of ear rows and number of grains row -1 (Table 5 and 6). Similarly, the superiority of the hybrid (5×1) can be attributed to its superiority in the trait of number of grains row -1 (Table 6), this aligns with findings from previous studies [29][30][31].…”

Section: Number Of Grains Ear -1supporting

confidence: 91%

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Evaluation of the Performance of Single Cross Maize Hybrids and Their Parents in the Spring and Autumn Seasons

Kazem,

Abed

2024

IOP Conf. Ser.: Earth Environ. Sci.

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A field experiment was conducted using five pure lines of maize: 1= NADH 102, 2= NASA 2022, 3= NAEL 2022, 4= NA 9928 E, and 5= NADH 2006. In the first season of spring 2022, a half-diallel hybridization program was implemented to obtain (10) single cross hybrids. Then, the parents and single cross hybrids were planted in a comparative experiment in the fields of the College of Agricultural Engineering Sciences - University of Baghdad / Jadriyah during the spring and autumn seasons of 2023 following a randomized complete block design with four replicates. To study the number of days to tasseling, plant height, leaf number, leaf area, row number, grain number per row, ear length, ear number, weight of 100 grains, and individual plant yield, the results of the study revealed significant differences among the genotypes. Parent 1 recorded the highest plant yield at 289.90 and 297.46 grams plant-1 for both seasons due to its superior weight of 100 grains (25.71 and 26.41 grams) for both seasons. Parent 3 did not differ significantly from parent 1, with a yield of 260.00 and 280.23 grams plant-1 for both seasons respectively, due to its superiority in the highest number of ear rows, grain per rows, and ear grains (18.16 and 18.25 rows ear-1, 30.75 and 32.08 grains row-1, and 559.1 and 585.1 grain ear-1) respectively for both seasons. Among the hybrids, the single cross hybrid (4×2) excelled with the highest plant yield at 427.64 and 450.44 grams plant-1 due to its superiority in plant height and weight of 100 grains (186.75 and 215.37 cm and 29.89 and 28.05 grams) respectively for both seasons. Similarly, the hybrid (5×1) did not differ significantly from hybrid (4×2) with a plant yield of 425.60 and 432.44 grams per plant respectively for both seasons, due to its early tasseling (56.00 and 46.00 days) respectively for both seasons. It also excelled in the number of grains ear-1 (547.2 and 581.4 grains ear-) respectively for both seasons. We propose studying single cross hybrid at different planting dates to demonstrate their ability to adapt to the Iraqi climate and to test them under stressful conditions such as drought.

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Section: Individual Plant Yieldsupporting

confidence: 94%

Section: Number Of Grains Ear -1supporting

confidence: 91%

Evaluation of the Performance of Single Cross Maize Hybrids and Their Parents in the Spring and Autumn Seasons

Kazem,

Abed

2024

IOP Conf. Ser.: Earth Environ. Sci.

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“…Dry seed weight per plant had a significant positive correlation with the yield of 0.61, while the correlation between harvested dry cobs and yields was 0.47 (Table 6). Hadi et al (2021) obtained a correlation coefficient of 0.64. The heritability of dry seed weight per plant was high in both locations, and the combination of the two locations was 64.53%, 51.18%, and 73.46% (Table 5).…”

Section: Discussionmentioning

confidence: 94%

“…Rai et al (2021) also obtained the same results, namely the phenotypic correlation of the results with the length of the cob and the diameter of the cob was 0.49 and 0.45, respectively. The phenotypic correlation of yield with higher cob length was obtained by Bartaula et al (2019) of 0.840, Yahaya (2021) of 0.790 in Kafanchan, and 0.727 in Kadawa, and Hadi et al (2021) of 0.681. Generic diversity is categorized as narrow (Table 2), and heritability for cob length and cob diameter is categorized as moderate (Table 5).…”

Section: Discussionmentioning

confidence: 96%

Genetic diversity and gain quantitative characters of maize from index-based selection at two dry lands in Lombok, Indonesia

SUDIKA¹,

SOEMEINABOEDHY²,

SUTRESNA³

2023

Biodiversitas

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Abstract. Sudika IW, Soemeinaboedhy IN, Sutresna IW. 2023. Genetic diversity and gain quantitative characters of maize from index-based selection at two dry lands in Lombok, Indonesia. Biodiversitas 24: 11-19. Genetic diversity and gain quantitative characters of maize from index-based selection at dry land is poorly reported. This research aims to study the genetic diversity and gain of several traits quantitative of the index-based selection at two dry lands in Amor-Amor and Pererenan, Lombok, Indonesia. A randomized block design with three replications was applied to design the experiment. The materials used is maize from nine populations, namely eight populations from the selection of index-based and one from the initial population. The data were analyzed for variance at the 5% significance level. The results showed that the genetic diversity of yields was categorized as moderate, and the weight of dry cobs harvested per plant was narrow in both locations. The genetic diversity of fresh stover weight per plant in Pererenan was wider than in Amor-Amor, but still in the same category, which was medium. These three traits had a significant genetic gain in the moderate category for both locations, except for the weight of fresh stover per plant, which was high in Pererenan. The dry seed weight per plant had a moderate genetic diversity and gain with a significant positive phenotypic correlation with yield. Yield and fresh stover per plant can still be increased through index-based selection by using dry seed weight per plant and fresh stover per plant in both locations.

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“…The method used by [ 6 ] is considered the most widely used by researchers and plant breeders due to the ease of statistical and genetic analysis, and the accuracy of its genetic interpretations. It was adopted by a large number of researchers, including [16][17][18][19].…”

Section: Diallel Crossesmentioning

confidence: 99%

Breeding Double Hybrids of Maize with Early Flowering and Physiological Maturity

Odhaib,

Hassan

2024

IOP Conf. Ser.: Earth Environ. Sci.

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Maize(Zea mays L.) is a good model for studying genetics and applying plant breeding and improvement, as it has a high ability to genetically adapt to a wide range of conditions. It requires implementing breeding programs for the maize crop to produce seeds of double hybrids and introduce them into agriculture because of their good specifications in production. It results from the multiplication of single hybrids that are characterized by their strong growt, and increase its grains compared to the plants used in the production of single hybrids. The extent to which genetic variants exist across plants is the primary determinant of the success of any breeding operation, including those aimed at enhancing maize varieties. Although phenotypic variations are detectable in every setting, they do not solely reflect the impact of genetic variations; rather, they reflect the impact of environmental variability, growth factors, and the interplay between genotype and environment. Maize is distinguished by its genetic and phenotypic variation, as well as its ability to adapt in different environments, noting that each environment has its hybrids and varieties. Suitability: The most appropriate sowing date for the growth of maize is one of the rules relied upon in growing the crop, especially in the fall season, as physiological maturity may be accompanied by rainfall, a decrease in temperature, and an increase in relative humidity, which negatively affects the grain yield in quantity and quality, so Early flowering and physiological maturity are important determinants in choosing the appropriate genotype for cultivation.

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Some Genetic Parameters and Path Coefficient of Three-Way Crosses in Maize

Cited by 3 publications

References 3 publications

Evaluation of the Performance of Single Cross Maize Hybrids and Their Parents in the Spring and Autumn Seasons

Evaluation of the Performance of Single Cross Maize Hybrids and Their Parents in the Spring and Autumn Seasons

Genetic diversity and gain quantitative characters of maize from index-based selection at two dry lands in Lombok, Indonesia

Breeding Double Hybrids of Maize with Early Flowering and Physiological Maturity

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