scholarly journals Combining Ability and Gene Action for some Traits and level of Aflatoxin Contamination in Peanut

2016 ◽  
Vol 7 (12) ◽  
pp. 1449-1456
Author(s):  
Rehab Abd El-Rhman ◽  
Kh. El Meleigy ◽  
Wafaa Shafi
Keyword(s):  
Combining Ability ◽  
Gene Action ◽  
Aflatoxin Contamination

Combining Ability and Gene Action Studies for Heat-tolerance Physio-biochemical Traits in Tomato

2016 ◽  
Vol 10 (2) ◽  
pp. 99-106 ◽  
Author(s):  
Uttam Bhattarai ◽  
Pranab Talukdar ◽  
Akashi Sharma ◽  
Ranjan Das
Keyword(s):  
Heat Tolerance ◽  
Combining Ability ◽  
Gene Action ◽  
Biochemical Traits

scholarly journals Combining ability between common bean gene groups for root distribution trait

2020 ◽  
Vol 44 ◽  
Author(s):  
Paulo Henrique Cerutti ◽  
Sibila Grigolo ◽  
Rita Carolina de Melo ◽  
Ana Carolina da Costa Lara Fioreze ◽  
Altamir Frederico Guidolin ◽  
...  
Keyword(s):  
Common Bean ◽  
Combining Ability ◽  
Root Distribution ◽  
Gene Action ◽  
Relative Number ◽  
F1 Hybrids ◽  
Reciprocal Effect ◽  
Gene Group ◽  
Lattice Design ◽  
Additive Gene

ABSTRACT When different gene groups are combined by hybridization, the expression of predominant genes for a trait must be known. This understanding is fundamental to the decisions made by breeders in the stages of cultivation and selection of segregating populations during the breeding program. Thus, the objective of this study was to determine the effects of combining ability and gene action for the root distribution traits of the Andean and Mesoamerican common bean gene groups. Six common bean parents from the Andean and Mesoamerican groups were hybridized in a complete diallel mating scheme, resulting in 30 F1 hybrids. The parents and hybrids were planted in the field in a simple lattice design. The target trait was root distribution, calculated as the relative number of roots in the topsoil. The effect of the general combining ability was significantly higher than that of the specific combining ability (58%) and the reciprocal effect (41%). Particularly, the combination estimates were modified according to the order of the gene groups used. The combinations IPR Uirapuru x BAF53 (Mesoamerican x Andean), BAF53 x CBS14 (Andean x Andean), and CBS14 x IPR Uirapuru (Andean x Mesoamerican) mainly exhibited an increase in the mean root distribution. However, the highest fraction of genetic variance correlated with additive components (60%), even in crosses involving different gene groups. Consequently, the additive gene action was predominant in the expression of root distribution trait in common bean, irrespective of the gene group used.

scholarly journals Gene action and combining ability studies for protein content and grain quality traits in rice (Oryza sativa L.)

2019 ◽  
Vol 10 (1) ◽  
pp. 58
Author(s):  
M. Asvin Kirubha ◽  
R. P. Gnanamalar ◽  
K. Thangaraj ◽  
A. Kavitha Pushpam ◽  
A. R. Priyanka
Keyword(s):  
Oryza Sativa ◽  
Protein Content ◽  
Combining Ability ◽  
Grain Quality ◽  
Gene Action ◽  
Oryza Sativa L ◽  
Quality Traits

scholarly journals Combining Ability Studies for Identifying High Sugar Yielding Sweet Sorghum [Sorghum bicolor (L.) Moench] Genotypes

2020 ◽  
pp. 43-49
Author(s):  
B. C. Nandeshwar ◽  
Beka Biri ◽  
Alemayehu Dugassa
Keyword(s):  
Combining Ability ◽  
Sweet Sorghum ◽  
Gene Action ◽  
Ethanol Yield ◽  
Breeding Programme ◽  
Combining Ability Analysis ◽  
Half Diallel ◽  
High Ethanol ◽  
Sorghum Bicolor L ◽  
Pedigree Breeding

Combining ability analysis provides information about the gene action involved in the expression of a trait and facilitates breeding of superior cultivars. Hence, 45 hybrids evolved from 10 parent half-diallel were evaluated for combining ability to identify good general combiners and superior cross combinations for high ethanol yield from sweet sorghum. RSSV-21-2 has been identified as the best general combiner. It can be used in pedigree breeding programme for the incorporation of desired traits for enhancing ethanol yield. ARS-SS-35-1 × NSS-218 and ARS-SS-83 × NSS-221-2 have been identified as the best specific combinations. These could be exploited in heterosis breeding programme.

scholarly journals The Effects of Combining Ability for Yield Traits in Rice (Oryza sativa L.) under Sodic Soil

2020 ◽  
pp. 34-44
Author(s):  
Durgesh Kumar Shukla ◽  
S. N. Singh ◽  
S. C. Gaur ◽  
Anil Kumar
Keyword(s):  
Combining Ability ◽  
Gene Action ◽  
Oryza Sativa L ◽  
Hybrid Vigour ◽  
Yield Traits ◽  
Additive Gene Action ◽  
Early Maturity ◽  
Additive Gene ◽  
Rice Genotypes ◽  
Positive Effect

Information on combining ability is derived from data on twelve yield and yield contributing characters in fifteen male and three female parents utilised in line x tester fashion to estimate combining ability of rice genotypes under coastal saline condition. Forty Five hybrids generated from crossing three lines with fifteen testers were studied along with their parents for combining ability and gene action involved in the expression of characters in rice. The gca and sca effects were significant for all the characters. The magnitude of sca variance was higher than the gca variance for all the characters revealed the presence of predominance of non-additive gene action for all the characters under study. Halchal (-12.29) was found to be good general combiners for days to 50% flowering and early maturity, Halchal (-13.39). However, IR-24 (1.88) was good general combiners with significant positive effect for tallness. Magic (-12.05) good general combiners for dwarfness and Shriram 434 (1.57) was good general combiners for test weight however, Moti was best general combiner with gca estimates of 7.07 for harvest index and Kuber (3.48) was the good general combiners for yield/hill. Cross combinations RHR 27 x IR 24 (4.04) was significant and positive effect for yield/hill, performance for ear bearing tillers per plant were RHR 27 x IR 24 (1.88). In general, the crosses showing significant and desirable combining ability effects were associated with better per se performance for the respective traits. These hybrids could be utilized in heterosis breeding to exploit hybrid vigour.

Sign in / Sign up

Export Citation Format

Share Document