Estimates of Heterosis and Combining Ability in Winter Wheat 1

Crop Science ◽  
1968 ◽  
Vol 8 (3) ◽  
pp. 322-324 ◽  
Author(s):  
K. K. Gyawali ◽  
C. O. Qualset ◽  
W. T. Yamazaki
Keyword(s):  
Winter Wheat ◽  
Combining Ability

Combining ability and gene action studies for yield-contributing traits in crosses involving winter and spring wheat genotypes

2009 ◽  
Vol 57 (4) ◽  
pp. 417-423 ◽  
Author(s):  
S. Sharma ◽  
H. Chaudhary
Keyword(s):  
Winter Wheat ◽  
Spring Wheat ◽  
Combining Ability ◽  
Gene Action ◽  
Block Design ◽  
Additive Gene Action ◽  
Wheat Genotypes ◽  
Diallel Mating Design ◽  
Additive Gene ◽  
Wheat Hybrids

The success of winter × spring wheat hybridization programmes depends upon the ability of the genotypes of these two physiologically distinct ecotypes to combine well with each other. Hence the present investigation was undertaken to study the combining ability and nature of gene action for various morpho-physiological and yield-contributing traits in crosses involving winter and spring wheat genotypes. Five elite and diverse genotypes each of winter and spring wheat ecotypes and their F 1 (spring × spring, winter × winter and winter × spring) hybrids, generated in a diallel mating design excluding reciprocals, were evaluated in a random block design with three replications. Considerable variability was observed among the spring and winter wheat genotypes for all the traits under study. Furthermore, these traits were highly influenced by the winter and spring wheat genetic backgrounds, resulting in significant differences between the spring × spring, winter × winter and winter × spring wheat hybrids for some of the traits. The winter × spring wheat hybrids were observed to be the best with respect to yieldcontributing traits. On the basis of GCA effects, the spring wheat parents HPW 42, HPW 89, HW 3024, PW 552 and UP 2418 and the winter wheat parents Saptdhara, VWFW 452, W 10 and WW 24 were found to be good combiners for the majority of traits. These spring and winter wheat parents could be effectively utilized in future hybridization programmes for wheat improvement. Superior hybrid combinations for one or more traits were identified, all of which involved at least one good general combiner for one or more traits in their parentage, and can thus be exploited in successive generations to develop potential recombinants through various breeding strategies. Genetic studies revealed the preponderance of additive gene action for days to flowering, days to maturity and harvest index, and non-additive gene action for the remaining six traits.

Response to selection, combining ability and heritability of coleoptile length in winter wheat

Euphytica ◽  
2008 ◽  
Vol 164 (3) ◽  
pp. 709-718 ◽  
Author(s):  
K. Murphy ◽  
K. Balow ◽  
S. R. Lyon ◽  
S. S. Jones
Keyword(s):  
Winter Wheat ◽  
Combining Ability ◽  
Selection Combining ◽  
Response To Selection ◽  
Coleoptile Length

Traditional Combining‐Ability and Gardner‐Eberhart Analyses of a Diallel for Cold Resistance in Winter Wheat 1

Crop Science ◽  
1983 ◽  
Vol 23 (2) ◽  
pp. 314-318 ◽  
Author(s):  
P. C. Parodi ◽  
W. E. Nyquist ◽  
F. L. Patterson ◽  
H. F. Hodges
Keyword(s):  
Winter Wheat ◽  
Combining Ability ◽  
Cold Resistance

Relevance of Specific versus General Combining Ability in Winter Wheat

Crop Science ◽  
2012 ◽  
Vol 52 (6) ◽  
pp. 2494-2500 ◽  
Author(s):  
Manje Gowda ◽  
C. Friedrich H. Longin ◽  
Volker Lein ◽  
Jochen C. Reif
Keyword(s):  
Winter Wheat ◽  
Combining Ability ◽  
General Combining Ability

scholarly journals Combining ability of soft winter wheat varieties by plant traits in F1 hybrids in topcross system

2014 ◽  
Vol 0 (105) ◽  
pp. 85-94
Author(s):  
О. О. Четверик ◽  
А. Ф. Звягін ◽  
М. Р. Козаченко
Keyword(s):  
Winter Wheat ◽  
Combining Ability ◽  
Plant Traits ◽  
F1 Hybrids ◽  
Wheat Varieties ◽  
Soft Winter Wheat ◽  
Winter Wheat Varieties

scholarly journals The inheritance of plant height in winter wheat -Triticum aestivum L.-

Genetika ◽  
2005 ◽  
Vol 37 (2) ◽  
pp. 173-179 ◽  
Author(s):  
Veselinka Zecevic ◽  
Desimir Knezevic ◽  
Danica Micanovic ◽  
Milanko Pavlovic ◽  
Dusan Urosevic
Keyword(s):  
Winter Wheat ◽  
Plant Height ◽  
Combining Ability ◽  
Variance Components ◽  
Genetic Variance ◽  
Regression Line ◽  
Triticum Aestivum L ◽  
Wheat Varieties ◽  
F2 Generation ◽  
Mode Of Inheritance

Four winter wheat varieties (Srbijanka, Partizanka, KG-56 and PKB-111) have been selected for diallel crossing in other to study the mode of inheritance, gene effect and genetic variance components for the plant height in F2 generation. Sixty plants of parents and F2 generation were used for analysis. The mode of inheritance was done on the basis of the significance of components of genetic variance and the regression analysis. The inheritance of plant height in the most crossing combinations was superdominance. The combining ability analysis was found to be highly significant, which means both additive and non-additive type of gene actions. The best general combining ability manifested KG-56 variety, and the best specific combining ability have shown hybrids KG-56 x PKB-111, Srbijanka x PKB-111 and Partizanka x KG-56. The genetic variance components, average degree of dominance and regression line indicated superdominance in the inheritance of plant height. The dominant alleles frequency was higher than recessive alleles frequency, which confirmed the ratio of dominant/recessive alleles.

scholarly journals genetic study regarding the number of grains in spike in winter wheat

2010 ◽  
pp. 19-22
Author(s):  
Gheorghe Bunta ◽  
Elena Bucurean
Keyword(s):  
Winter Wheat ◽  
Combining Ability ◽  
General Combining Ability ◽  
F1 Hybrids ◽  
Breeding Line ◽  
Grain Number ◽  
Wheat Varieties ◽  
Reduced Height ◽  
Grain Number Per Spike ◽  
Positive Effect

Grain number per spike was studed in 6 winter wheat varieties and all their 30 direct and reciprocal F1 hybrids. Parentsincluded 4 released Romanian variety, the old american Atlas 66 and a dwarf breeding line, Oradea 79. This line has a low number ofgrains/spike, but is important in breeding program for here reduced height. General and specific combining abilities were computed andgenetic effects were estimated using Griffing’s method 1, model 1, as modified by Cabulea (1983).For this diallel crosses, gene interactions and the interaction between cytoplasm and nuclear genes were highly significant andthe ratio of additive and non-additive effects was close to one.The variety Fundulea 29 showed the highest general combining ability and it is recommended as a good parent for increasinggrain number/spike. Mid-parent heterosis was significant in 9 out of the 30 cases, mostly in hybrids involving the breeding line Oradea 79.In 3 cases the number of grains/spike of F1 hybrids was significantly lower than the average of the parents. The breeding line Oradea 79 hada significant negative general combining ability, but showed significant positive specific combining ability in most crosses, as well as asignificant positive effect of its cytoplasm. These results are considered to indicate that there are chances of improving the grainnumber/spike in some crosses with Oradea 79.

Sign in / Sign up

Export Citation Format

Share Document