Combining ability in maize
WebJan 1, 2024 · The aim of this study was to estimate heterosis and combining ability of maize genotypes under water stress during seed germination and seedling emergence. Four inbred lines previously characterized as water stress tolerant were crossed with four nontolerant lines in partial diallel scheme to obtain 16 hybrids and 16 reciprocals. WebSep 3, 2024 · Knowledge of combining ability and genetic diversity are important prerequisites for the development of outstanding hybrids that are tolerant to high plant …
Combining ability in maize
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WebDec 20, 2024 · Specific combining ability was computed as follows: SCAx = Xx − E (Xx) = Xx− [GCAf + GCAm + µ] Here, SCAx is equal to SCA for a cross, Xx is equal to observed mean values of the cross and E (Xx) = expected value of the cross based on GCAf and GCAm [ 22 ]. 3. Results 3.1. Analysis of Variance WebApr 11, 2024 · A better understanding of combining ability and gene action conditioning traits related to hybrid inducers is necessary to set the breeding strategy including to what extent parent-based hybrid prediction is feasible. ... , title={Combining ability of tropical × temperate maize inducers for haploid induction rate, R1-nj seed set, and agronomic ...
WebJan 5, 2011 · Drought and low soil fertility are considered the most important abiotic stresses limiting maize production in sub-Saharan Africa. Knowledge of the combining ability and diversity of inbred lines with tolerance to the two stresses and for those used as testers would be beneficial in setting breeding strategies for stress and nonstress environments. … WebWhen using a classical approach based on general combining ability (GCA) estimation, the most important discrepancies between predicted and actual values of the hybrids were obtained for overestimated crosses (actual value poorer than predicted).
WebSep 7, 2024 · Low soil nitrogen (low N) threatens maize production in sub-Sahara Africa (SSA). We examined the mode of gene action conditioning grain yield of intermediate maturing inbreds and evaluated lines in hybrid combinations for high yield, stability and tolerance to low N. Thirty-two sets of inbreds were crossed to three elite testers (87036, … WebJan 1, 2008 · Many investigations have been conducted on grain yield combining ability and the results have been widely used in maize breeding programs. Limited research …
WebThere are two types of combining ability (namely, gca and sca). Sprague and Tatum (1942) defined gca as the average performance of lines in a series of hybrid combinations and sca as the deviation of certain crosses from the average performance of the lines.
WebSo far, combining ability effects in maize inbred lines has been extensively studied under stressed conditions. In a comparative evaluation study of landraces and improved … paid family leave payroll taxWebMar 1, 1999 · General combining ability variance was only significant at the ear internode, whereas SCA variance was not significant at either internode. Reciprocal effects were … paid family leave parentWeb3 Quality Assurance – Quality assurance refers to all actions taken to ensure that standards and procedures are adhered to, and that delivered services and supports meet … paid family leave pfl nycWebKeywords: Combining ability, GCA, Inbred line, low nitrogen, SCA and Yield. 1. INTRODUCTION Maize (Zea mays L.; 2n =20) is an important cereal crop of the world, belonging to the tribe Maydeae of the grass family Poaceae (George, 2007). It is an important stable crop for many people around the world. As the cultivation of early paid family leave payment calculatorWebCombining ability analysis is one tool that is commonly used to identify inbred lines that having better combining ability to produce high F1 grain yield [12][13][14][15][16]. Information about the combining ability of an inbred is an important factor adopted in the process of effective hybrid breeding selection program. paid family leave pfl benefitsWebJan 20, 2024 · Combining ability estimates the ability of a genotype to generate suitable offspring (Allard 1960). It is divided broadly into general combining ability (GCA) of the … paid family leave payments waWebJan 10, 2024 · A Combined Relative Level (CRL) model using 112 metabolite levels in young roots from four parental inbred lines and their diallel hybrids in maize indicates that parental metabolite profiles can... paid family leave phone number edd