Estimation of Combining Ability for Yield and Yield Components in Rice(Oryza sativa L.) Cultivars Using Diallel Cross

Ahangar, Leila; Ranjbar, Gholam Ali; Nouroozi, M

doi:10.3923/pjbs.2008.1278.1281

Cited by 11 publications

(5 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Combining ability has been successfully applied in crop and livestock hybrid breeding to evaluate parental performance for more than 70 years ( Ahangar et al, 2008 ; Moterle et al, 2011 ). Therefore, parental inbred lines with high combining ability are considered critical for parental line selection and for the development of superior hybrids ( Duvick et al, 2004 ).…”

Section: Discussionmentioning

confidence: 99%

Dissecting the Genetic Basis Underlying Combining Ability of Plant Height Related Traits in Maize

Zhou

Zhang

et al. 2018

Front. Plant Sci.

View full text Add to dashboard Cite

Maize plant height related traits including plant height, ear height, and internode number are tightly linked with biomass, planting density, and grain yield in the field. Previous studies have focused on understanding the genetic basis of plant architecture traits per se, but the genetic basis of combining ability remains poorly understood. In this study, 328 recombinant inbred lines were inter-group crossed with two testers to produce 656 hybrids using the North Carolina II mating design. Both of the parental lines and hybrids were evaluated in two summer maize-growing regions of China in 2015 and 2016. QTL mapping highlighted that 7 out of 16 QTL detected for RILs per se could be simultaneously detected for general combining ability (GCA) effects, suggesting that GCA effects and the traits were genetically controlled by different sets of loci. Among the 35 QTL identified for hybrid performance, 57.1% and 28.5% QTL overlapped with additive/GCA and non-additive/SCA effects, suggesting that the small percentage of hybrid variance due to SCA effects in our design. Two QTL hotspots, located on chromosomes 5 and 10 and including the qPH5-1 and qPH10 loci, were validated for plant height related traits by Ye478 derivatives. Notably, the qPH5-1 locus could simultaneously affect the RILs per se and GCA effects while the qPH10, a major QTL (PVE > 10%) with pleiotropic effects, only affected the GCA effects. These results provide evidence that more attention should be focused on loci that influence combining ability directly in maize hybrid breeding.

show abstract

Section: Discussionmentioning

confidence: 99%

Dissecting the Genetic Basis Underlying Combining Ability of Plant Height Related Traits in Maize

Zhou

Zhang

et al. 2018

Front. Plant Sci.

View full text Add to dashboard Cite

show abstract

“…By contrast, SCA is characterised by non-additive effects, including dominance, over-dominance and epistasis, which are considered difficult to resolve in progeny due to their low heritability and their interactions with the environment 4 . Until now, most studies of combining ability have focused on the identification of promising parents 5 6 7 8 9 10 . However, the genetic and molecular basis of GCA has been largely overlooked.…”

mentioning

confidence: 99%

OsPRR37 and Ghd7 are the major genes for general combining ability of DTH, PH and SPP in rice

Liu

Song

Zhou

et al. 2015

Sci Rep

View full text Add to dashboard Cite

Artificial selection of high yield crops and better livestock is paramount importance in breeding programs. Selection of elite parents with preferred traits from a phalanx of inbred lines is extremely laborious, time-consuming and highly random. General combining ability (GCA) was proposed and has been widely used for the evaluation of parents in hybrid breeding for more than half a century. However, the genetic and molecular basis of GCA has been largely overlooked. Here, we present two pleotropic QTLs are accounting for GCA of days to heading (DTH), plant height (PH) and spikelet per panicle (SPP) using an F2-based NCII design, the BC3F2 population as well as a set of nearly isogenic lines (NILs) with five testers. Both GCA1 and GCA2 were loss-of-function gene in low-GCA parent and gain-of-function gene in high-GCA parent, encoding the putative Pseudo-Response Regulators, OsPRR37 and Ghd7, respectively. Overexpression of GCA1 in low-GCA parent significantly increases GCA effects in three traits. Our results demonstrate that two GCA loci associate with OsPRR37 and Ghd7 and reveal that the genes responsible for important agronomic traits could simultaneously account for GCA effects.

show abstract

“…In the case of a hybrid breeding program, the selection of parents based on phenotypic performance alone is not a sound proposition since phenotypically superior lines may yield poor recombination in the segregating generations. To overcome this challenge, combining ability is used in hybrid plant breeding programs to select parents and superior hybrid combinations [7,8]. Combining ability analysis is a useful approach for measuring a parent's potential in order to create a superior hybrid.…”

Section: Introductionmentioning

confidence: 99%

Combining Ability Analysis and Marker-Based Prediction of Heterosis in Yield Reveal Prominent Heterotic Combinations from Diallel Population of Rice

et al. 2022

View full text Add to dashboard Cite

Combining ability along with heterosis was elucidated in the 21 F1 hybrid population of rice derived from a 7 × 7 diallel mating design. Furthermore, to formulate a strategy for marker-based prediction of heterosis, the molecular genetic diversity (GD) was then surveyed among the seven parental lines with RAPD markers. Analysis of combining ability revealed significant GCA and SCA variances and the ratio between the aforesaid genetic parameter was more than unity for most of the traits signifying the preponderance of additive gene action. Hybrid combination Double Rice × Pokkali was the best specific combiner for the traits pollen fertility percentage (%), panicle length (cm), filled grains/panicle (no.) and grain yield/hill (g) while Muktagacha × BRRI dhan29 and Basmati × Double Rice were the best specific combiners for grain length (mm) and 1000-grain weight (g), respectively. Regarding the magnitude of heterosis, Double Rice × Pokkali exhibited maximum heterobeltiosis for panicle length (33.33%) and the number of filled grains/panicle (144.01%). Furthermore, Pokkali × Chinigura was verified for producing the highest heterobeltiosis for tillers/hill (173.17%), as well as grain yield/hill (71.05%). The heatmap relying on molecular genetic diversity exposed the highest genetic distance between Chinigura and Pokkali followed by Muktagacha and Pokkali. Unweighted neighbor-joining trees clustered the parental lines into three groups indicating the presence of considerable genetic diversity among those seven parental genotypes. A positive and significant correlation was explored between molecular GD with specific combining ability as well as heterosis for all of the traits revealing the huge potentiality of hybrid performance prediction using RAPD markers with the present set of individuals. Thus, exploration of definite genomic regions underlying the candidate genes for respective traits relying on such RAPD-generated data following an advanced molecular marker approach would pave the path of mining out yielder heterotic combinations.

show abstract

Estimation of Combining Ability for Yield and Yield Components in Rice(Oryza sativa L.) Cultivars Using Diallel Cross

Cited by 11 publications

References 6 publications

Dissecting the Genetic Basis Underlying Combining Ability of Plant Height Related Traits in Maize

Dissecting the Genetic Basis Underlying Combining Ability of Plant Height Related Traits in Maize

OsPRR37 and Ghd7 are the major genes for general combining ability of DTH, PH and SPP in rice

Combining Ability Analysis and Marker-Based Prediction of Heterosis in Yield Reveal Prominent Heterotic Combinations from Diallel Population of Rice

Contact Info

Product

Resources

About