Gene Action for Various Grain and Fodder Quality Traits in &lt;i&gt;Zea Mays&lt;/i&gt;

Ali, Qurban; Ali, Arfan; Tariq, Muhammad; Abbas, Mohammed Abdulridha; Sarwar, Bilal; Ahmad, Mukhtar; Awaan, Mudassar Fareed; Ahmed, Shafique; Nazar, Zaheer Ahmad; Akram, Faheem; Shahzad, Atif; Samiullah, Tahir Rehman; Nasir, Idrees Ahmad; Husnain, Tayyab

doi:10.12691/jfnr-2-10-9

Cited by 14 publications

(5 citation statements)

References 19 publications

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“…Over 80% of total global agricultural land is rain-fed (Berzsenyi et al, 2006) thus the development of genotypes that survive better in water scarce condition is the need of hour. Phenotypic stability of the traits in maize hybrids is the best way to measure the genetic variability (Chavan et al, 2015) by overwhelming the two most common variables in field: soil heterogeneity and environment (Khorasani et al, 2011; Ali et al, 2014a,c, 2015a). Therefore, multivariate analysis (Ashmawy, 2003; El-Badawy and Mehasen, 2011) displays a better idea of the underlying latent factors and an interface between individual genotype and variable.…”

Section: Introductionmentioning

confidence: 99%

Phenotypic Stability of Zea mays Grain Yield and Its Attributing Traits under Drought Stress

et al. 2017

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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 yield under water stress conditions. Genotypic and phenotypic correlation of yield attributing traits over four seasons demonstrated that cobs per plant, 100 seed weight, number of grains rows per cob, total dry matter, cob diameter had positive association (r2 = 0.3–0.9) to grain yield. The perturbation was found for chlorophyll content as it showed moderate to strong association (P < 0.01) over four seasons, might be due to environment or genotype dependent. Highest heritability (95%) and genetic advance (79%) for grain yield was found in H9 over four consecutive crop growing seasons. Combined analysis over four seasons showed that studied variables together explained 85% of total variation in dependent structure (grain yield) obtained by Principal component analysis. This significant finding is the best example of phenotypic stability of grain yield in H9 and made it best fitted for grain yield under drought stress scenario. Detailed genetic analysis of H9 will help us to identify significant loci and alleles that made H9 the best fitted and it could serve as a potential source to generate novel transgressive levels of tolerance for drought stress in arid/semiarid regions.

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Section: Introductionmentioning

confidence: 99%

Phenotypic Stability of Zea mays Grain Yield and Its Attributing Traits under Drought Stress

et al. 2017

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“…Maize is an important cereal crop that is grown as food for human and feed for livestock. Its grain constitutes about 9.7396 % grain protein, 4.85% grain oil, 9.4392% grain crude fibre, 71.966% grain starch, 11.77% embryo while fodder contains 22.988% acid detergent fibre, 51.696% neutral detergent fibre, 28.797% fodder cellulose, 40.178% fodder dry matter, 26.845% fodder crude fibre, 10.353% fodder crude protein and 9.095% fodder moisture [1][2]. Nitrogen is the most important nutritive element for the production of maize.…”

Section: Introductionmentioning

confidence: 99%

Regression of Grain Yield of Maize Inbred Lines and Their Diallel Crosses on Elevated Levels of Soil-Nitrogen

Al-Naggar

Shabana

Atta

et al. 2015

IJPSS

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Maize grain yield response to elevated levels of soil nitrogen is dependent upon genotype of the cultivar. Thus the optimum rate of N-fertilizer differs from maize genotype to another according to its nitrogen use efficiency (NUE). The main objective of this study was to determine the optimum Nrate for each studied inbred and hybrid that maximize grain yield. Six inbred lines of maize differing in their productivity under low-N were crossed in a diallel fashion to produce 15 F1ˊs. Parents and F1ˊs were evaluated in two seasons (2012 and 2013) using a split-plot design in randomized complete blocks arrangement with 3 replications. Main plots were allotted to four N-rates, i.e. 0, 80, 160 and 240 kg N/fed for N1, N2, N3 and N4, respectively. The sub-plots were assigned for the genotypes. Reducing N-level from 204 to 160, 80 and 0 kg N/feddan (fed) [one fed = 4200 m2] caused an increase in days to silking (DTS), anthesis silking interval (ASI), barren stalks (BS), economic NUEe and biological NUEb NUE and a decrease in the remaining studied traits including grain yield and its component. Maximum increase and decrease in traits occurred at N1 level (0 kg N/fed). The inbred lines L17, L18 and L53 proved to be tolerant (T), while L29, L54 and L55 inbred lines were sensitive (S) to N stress. The most tolerant crosses to low-N stress and the most responsive crosses to elevated levels of nitrogen were identified. Only two crosses (L18 × L53 and L18 × L55) showed high tolerance to low-N stress and responsiveness to high-N expressed in grain Original Research Article

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“…The correlation of seedling traits indicated that the shoot and root length and their weights may be utilized for the selection of better-yielding maize genotypes under salt stress conditions. The higher shoot and root length caused to increase photosynthetic rate in leaves and led to the accumulation of organic matters in the seedling body, due to which the growth and development of maize seedlings improved even under salt stress conditions [69,74,75,76].…”

Section: Discussionmentioning

confidence: 99%

Evaluation of genetic variation among maize inbred lines for salinity stress at seedling stage through salt-stress-responsive traits

Zaidi

Shahzad

Ahsan

et al. 2022

Acta Universitatis Sapientiae, Agriculture and Environment

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Saline conditions affect plant development and significantly reduce its yield. Maize (Zea mays) is the one of main cash crops in Pakistan, and unfavourable saline conditions are among the core reasons for its reduced productivity, especially in arid and semi-arid regions. The identification of potential genotypes is essential for genetic modifications. By considering this situation, the current experiment was conducted to evaluate the inbred maize lines under different salinity levels. We evaluated ten maize inbred maize lines at seedling stage under three salinity levels (0 mM, 75 mM, and 125 mM NaCl). The highly significant (p ≤ 0.001) differences in inbred lines, salinity levels, and in their interaction were revealed by analysis of variance results for most of the traits. The results indicated that inbred lines D-135 and NCIL-20-4 performed better under saline conditions. Our results showed that salinity severely affects seedling growth. Accordingly, a significant decline was observed in root length, shoot length, root weight, and shoot weight, and these traits offered the maximum values for heritability and genetic advance. From the correlation and path coefficient analysis, it has been concluded that root length, shoot length, fresh root weight, and root density are the traits that can be beneficial for the identification of better germplasms under saline conditions and that are helpful for improving tolerance against saline conditions.

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Gene Action for Various Grain and Fodder Quality Traits in <i>Zea Mays</i>

Cited by 14 publications

References 19 publications

Phenotypic Stability of Zea mays Grain Yield and Its Attributing Traits under Drought Stress

Phenotypic Stability of Zea mays Grain Yield and Its Attributing Traits under Drought Stress

Regression of Grain Yield of Maize Inbred Lines and Their Diallel Crosses on Elevated Levels of Soil-Nitrogen

Evaluation of genetic variation among maize inbred lines for salinity stress at seedling stage through salt-stress-responsive traits

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