Combining ability in rice
WebThe study reveals the preponderance of non-additive gene action which favors the commercial exploitation of these hybrids improve yield ultimately and the same hybrids would also produce promising and desirable segregants in the segregating generations. In the present investigation combining ability study was undertaken by crossing five lines … WebStudies conducted at the International Rice Research Institute (IRRI) during 1980 and 1981 have shown up to 73% heterosis, 59% heterobeltiosis and 34% standard heterosis for yield in rice. The latter was estimated in comparison to commercial varieties: IR36 and IR42 (yield 4–5 t/ha in wet season trials and 7–8 t/ha in dry season trials). Generally speaking, …
Combining ability in rice
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WebCombining ability in crosses is defined as the ability of parents to combine amongst each other during the process of fertilization so that favourable genes or characters are transmitted to their progenies [1]. Two types of combining ability, general (GCA) and specific (SCA), have been recognized in quantitative genetics. WebAug 29, 2024 · Combining ability is a measure for selecting elite parents that make the highest contributions to hybrid performance. However, the genetic bases of combining …
Web“ RICE is boldly pursuing pathways to expand the possibilities for entrepreneurs in Atlanta and beyond at a time when ensuring equitable opportunities for Black-owned businesses … WebMar 4, 2024 · The appearance of milled rice is essential to the consumer, making it also crucial to producers and millers. Thus, it is a significant breeding consideration. The main objective of this study was to assess the combining ability for rice grain quality to recognize the most desirable genotypes for rice breeding programs. 2. Materials and …
WebDec 1, 2006 · Combining ability in rice was studied in a set of 4 lines and 10 testers with their 40 hybrids. The analysis of variance indicated magnitudes of sca variances were higher than gca variances for... WebJan 1, 2006 · Combining ability, heterobeltiosis, heritability in broad and narrow sense, genetic variability, genetic advance and nature of gene action were studied on 30 F1 hybrids along with thirteen rice ...
WebMay 6, 2024 · To achieve wide-scale adoption of two-line hybrid rice technology, we need ideal TGMS lines that should possess a higher combining ability, outcrossing rate, and market-desirable grain quality features along with insect and disease resistance (Fig. 6). During the sterile induction phase, the plants must be 100% male sterile with more than …
WebJan 26, 2012 · Combining ability is a complex trait that is controlled by polygenes. With the advent and development of molecular markers, it is feasible to evaluate the genetic … birth preparedness planWebAug 14, 2024 · In decades of hybrid rice breeding, the combining ability has been successfully used to evaluate excellent parental lines and predict heterosis. However, previous studies for the combining ability mainly focused on cultivated rice and rarely involved wild rice. In this study, for the first time, we … birth preparation course onlineWebJan 4, 2024 · The aim of this study is trying to know the genetic behavior responsible for water-deficit tolerance in rice genotypes but at the molecular level. Moreover, this … birth preparedness pptWebAllocytoplasmic restorers and performance of hybrids in rice (Oryza sativa L.) Combining ability analysis for yield and quality traits of 54 rice hybrids developed by crossing three CMS lines and eighteen restorers in L x T design were evaluated in … darden smith angel flightdarden seasons 52WebFeb 20, 2003 · Due to good combining ability and wide adaptability, Pei’ai 64S is the most important T/PGMS line commercially used in two-line hybrid rice production (Yuan, 1997). The new hybrid rice cultivar ‘Liangyou Peijiu’, which was produced from ‘Pei’ai 64S and the restorer ‘9311’, is one of the famous super rices with the highest yield of ... darden share priceWebJun 30, 2024 · Combining ability in rice was studied with a set of 4 lines and 10 testers and their 40 hybrids. The magnitudes of gea variances were higher than sea variances for all the characters which indicated that additive gene action was predominant in the expression of traits. The estimation of gea effects for parents revealed that females, … darden tech club