The comparison of several methods for calculating the degree of heritability and calculating the number of genes in maize (Zea mays L.). I. Agronomic traits

Hadi, Banan Hassan; Hassan, Wajeeha Abed; Wuhiab, K. M.

doi:10.1088/1755-1315/388/1/012041

Cited by 5 publications

(6 citation statements)

References 6 publications

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“…The variation in the number of grain row -1 could result from differences in the performance of genotypes with the environment, in addition to temperature and humidity. This aligns with findings from previous studies [26][27][28].…”

Section: Number Of Grain Row -1supporting

confidence: 93%

“…In the autumn season, the single cross hybrid (2×1) gave the highest average leaf number at 13.62 leaves plant -1 , and did not differ from hybrids (3×1), (4×1), (3×2), (4×2), (4×3), and (5×4), which gave an average leaf number of 12.96, 12.58, 12.29, 13.29, 13.16, and 12.62 leaves plant -1 respectively. This observation consists with the results[15][16][17][18].…”

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confidence: 95%

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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: Number Of Grain Row -1supporting

confidence: 93%

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confidence: 95%

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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“…These results are normal because the phenotypic traits are the result of the genetic and environmental influence and the interaction between them. This is consistent with the results of [14], [15], [16], [17], [18]and [19]The amount of the heritability percentage refers to the degree of confidence with which the genotype can be distinguished through its phenotypic expression. Table (4) shows that a large percentage of the phenotypic variation was explained through the genetic component in most traits.…”

Section: Genetic Parameters At the First Date1 St Julysupporting

confidence: 92%

Some Genetic Parameters of Double Crosses under Different Planting Dates Suitable to the Middle Region of Iraq

Brto,

Hadi

2023

IOP Conf. Ser.: Earth Environ. Sci.

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With the aim of estimating some genetic parameters of double crosses at sowing dates appropriate to the fall season in the middle region of Iraq, a field experiment was conducted in the fields of the College of Agricultural Engineering Sciences - University of Baghdad - Al-Jadriya for the fall season 2022 using superior double crosses of maize were chosen from fifteen double crosses. It was obtained from the crossing of ten single crosses resulting from the crossing of five inbred lines (1=ZM43WIZE, 2=ZM60, 3= ZM49W3E, 4=ZM19, 5=CDCN5) by the half-dialle crossing method. Hybrids (3×5)(1×4),(3×5)(1×2),(2×4)(1×5), (4×5)(1×2), and (2×3)(1×4), compared it with the synthetic cultivar IPPA 5012 and tested it under three planting dates:1st July, 15th July and 1st August. The Randomized Complete Block Design (RCBD) was used with four replicates. The traits were studied: tassling, silking, plant height, ear height, number of leaves, leaf area, ear length, ear diameter, number of rows, number of grains per row, number of grains in a row, number of ears, average grain weight, dry matter weight, physiological maturity, ear weight, plant growth rate, individual plant yield, unit area yield, and. harvest Index. The results of the genetic analysis showed that the value of the standard error was low in all traits except for leaf area, number of plant seeds, and in the three dates, and the values of the coefficient of variation (C.V) on1st July were less than 20 in all traits except for individual plant yield, area unit yield, harvest index, and time. 15 th July and 1st August were also less than 20, and the values of genetic variance at the date of 1st July were greater than the values of environmental variance in most of the studied traits, except for ear height, ear length, ear diameter, number of rows, and ear weight. The ratio of genetic variation to environmental variation, as it was less than 1, and it had P.C.V values higher than G.C.V.The number of grains in the row, the weight of the dry matter, the physiological maturity and the plant growth rate due to the high genetic variance for it and the values of the ratio of genetic to environmental variance and then the high heritability values for it and on the date 1st August and the values of the genetic variance were greater than the values of the environmental variance in most of the studied traits.

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“…Heritability is a statistical genetic study that can provide an estimate of the number of phenotypic variations in a population caused by genetic variance (Visscher et al, 2008). In this study, the estimated heritability value was broad sense heritability which is obtained from a comparison between total genetic variation and phenotype variation (Hadi et al, 2019). Information on heritability value is needed to increase the effectiveness in the selection of superior plant genotypes because it can be seen to what extent a character can be inherited.…”

Section: Variance Analysis Heritability and Genetic Coefficient Of Variationmentioning

confidence: 99%

ORRELATION AND PATH ANALYSIS OF INTRODUCTION KIDNEY BEAN (Phaseolus vulgaris L.)

Yuliawati

Yulianti

Indriani

2021

IJAR

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Efforts to improve the yield of kidney beans can be done through plant breeding programs, namely through introduction and selection activities. Selection is carried out to identify superior genotypes and will be effective if the relationship and influence between the characters are known. The research was conducted to study the closeness of the relationship between the characters of introduced kidney beans from Timor Leste and their direct and indirect effects through correlation and path analysis. This research was conducted at the Universitas Djuanda Experimental Garden, Ciawi, Bogor, in August-November 2020. The research design used was a randomized complete block design (RCBD) with accession as a factor and repeated 4 times. The results showed that the number of pods character had the highest correlation coefficient value on seed weight per plant as a yielding character for kidney beans with a value of r = 0.91 *. Besides, the number of pods also had a high direct (0.35) and indirect (0.91) effect through the characters of the number of seeds per pod (0.8) and the number of branches (0.3).

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The comparison of several methods for calculating the degree of heritability and calculating the number of genes in maize (Zea mays L.). I. Agronomic traits

Cited by 5 publications

References 6 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

Some Genetic Parameters of Double Crosses under Different Planting Dates Suitable to the Middle Region of Iraq

ORRELATION AND PATH ANALYSIS OF INTRODUCTION KIDNEY BEAN (Phaseolus vulgaris L.)

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