Assessment of Combining Ability Effects for several Yield and Quality Traits in a Complete Diallel Cross of Strawberry (Fragaria × ananassa Duch.)

Information on the inheritance of yield and quality traits is important for the selection of parents and breeding approaches to be adopted for the improvement of strawberry. The present study aimed to estimate the combining ability and gene effects for plant yield, fruits number/plant, fruit weight, pulp firmness and sugar content of strawberries in order to identify the best genitors and promising crosses, in 30 hybrids of six parents. The additive and non-additive gene action as well as the maternal effects was involved in the inheritance of the studied traits. For all traits, especially for fruit weight and plant yield, the additive gene action was more important than the non-additive one. The parents ‘A1’ and ‘Alba’ showed a higher concentration of favourable alleles for plant yield and fruits number, and they will allow the increase of plant yield when used as a donor of pollen and the increase of fruit number when used as a recipient of pollen. The variety ‘Marmolada’ was a good general combiner for sugar content, pulp firmness and fruit weight, especially when used as a female genitor. These parents could be used in hybridization in order to accelerate the genetic improvement of some yield and quality traits in strawberries. The cross ‘Mira’ × ‘Onda’ expressed desirable specific combining ability effects for yield traits and can be successfully use in strawberries breeding programs. In the case of ‘Alba’ × ‘Clery’ there is a high probability to select progenies with valuable yield traits associated with sweet fruits.

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

Current Journal of Applied Science and Technology ◽

10.9734/cjast/2020/v39i1230661 ◽

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.

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Combining ability analysis in near homozygous lines of okra [Abelmoschus esculentus (L.) Moench] for yield and yield attributing parameters

Journal of Applied and Natural Science ◽

10.31018/jans.v9i1.1191 ◽

2017 ◽

Vol 9 (1) ◽

pp. 324-331

Author(s):

Y. A. Lyngdoh ◽

R. Mulge ◽

A. Shadap ◽

Jogendra Singh ◽

Seema Sangwan

Keyword(s):

Combining Ability ◽

Genetic Variance ◽

Gene Action ◽

Additive Genetic Variance ◽

Total Yield ◽

Fruit Weight ◽

Additive Gene Action ◽

Combining Ability Analysis ◽

Additive Gene ◽

Number Of Branches

Line × tester analysis was carried out with the objective of identifying the good combiners and to decide the breeding strategies for developing potential and productive genotypes or cultivars. Parents and hybrids differed significantly for GCA and SCA effects for all the characters respectively. Specific combining ability (SCA) variance was higher than the general combining ability (GCA) variance which shows the predominance of non-additive gene action for the improvement of all the characters studied. The parents and crosses having highest and significant GCA and SCA effects viz., KO-18 (13.69), KO-6 (9.54) and KO-2 × Parbhani Kranti (19.28) for plant height; KO-12 (0.34), KO-14 (0.19) and KO-5 × V5 (0.60) for number of branches per plant; KO-14 (-0.66) and KO-15 × Arka Anamika(-1.66) for days to first flowering; KO-1(1.10), Arka Anamika (0.46) and KO-9 × VRO-5 (3.28) for fruit length; KO-7 (7.91), VRO-5(1.68) and KO-18 × VRO-6 (8.64) for average fruit weight; KO-2 (1.18) and KO-17 × Arka Anamika (2.80) for number of fruits per plant; KO-9(0.05), VRO-6 (0.01) and KO-11 × VRO-6 (0.10) for total yield per plant were identified as good general and specific combiners. The results establish the worth of heterosis breeding for effective usage of non-additive genetic variance in okra.

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Heterosis and combining ability studies by Line × tester analysis for fruit biochemical, morpho-physiological, and yield traits governing shelf life in tomato (Solanum lycopersicum L.)

10.21203/rs.3.rs-1165702/v1 ◽

2021 ◽

Author(s):

pavan MP ◽

Gangaprasad S ◽

Dushyanthakumar B M ◽

Nagrajappa Adivappar

Keyword(s):

Shelf Life ◽

Fruit Quality ◽

Combining Ability ◽

Gene Action ◽

Titratable Acidity ◽

High Yield ◽

Yield Traits ◽

Additive Gene Action ◽

Solanum Lycopersicum L ◽

Additive Gene

Abstract Improving tomatoes keeping quality is crucial for reducing post-harvest losses. Knowledge on heterosis, and combining ability is pre requisite for breeding high yielding and good shelf life heterotic hybrids. An investigation was undertaken with each of 3 lines, testers, and 9 hybrids to identify desirable parents and crosses for 20 fruit biochemical, morpho-physiological, and yield traits and to elucidate nature of gene action for shelf life and its contributing traits through Line × Tester analysis. The lines contributed to most of hybrids variability than testers and fruit quality traits had higher degree of SCA variance as compared to GCA variance. pH, ascorbic acid, fruit firmness, and plant height governed by additive gene action. Lycopene, titratable acidity, TSS, calcium, magnesium, pericarp thickness, pulp content, locule number, fruit length, diameter, weight, shelf life, number of branches, number of clusters, number of fruit/cluster, and yield/plant were under the control of non-additive gene action. All the lines and Arka Saurabh were best general combiners and IIHR 2349 × Arka Vikas, IIHR 2349 × Arka Saurabh, IIHR 2358 × Arka Ahuti and IIHR 2357 × Arka Ahuti were the best specific combiner in producing heterotic hybrids. IIHR 2349 × Arka Vikas and IIHR 2349 × Arka Saurabh were promising hybrids for high yield and shelf life. The crosses involved both parents with high, one parent with high and other with low and both parents with low good overall general combining ability status respectively indicated the additive, non-additive and epistatic gene action in fruit quality and yield traits inheritance.

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COMBINING ABILITY AND HETEROTIC STUDIES ON HYBRID MELON (Cucumis melo L.) POPULATIONS FOR FRUIT YIELD AND QUALITY TRAITS

10.21107/amzeri.2020.3 ◽

2020 ◽

Author(s):

Kaswan Badami ◽

◽

Budi Setiadi Daryono ◽

Achmad Amzeri ◽

Syaiful Khoiri ◽

...

Keyword(s):

Combining Ability ◽

Cucumis Melo ◽

Gene Action ◽

Fruit Weight ◽

Soluble Solids ◽

F1 Hybrids ◽

Quality Traits ◽

Yield And Quality ◽

Cucumis Melo L ◽

Fruit Diameter

In different crop plants, combining ability and heterosis are used as important diagnostic tools for assessing the performance of parental genotypes and their hybrids. This research aimed to evaluate heterotic and combining ability effects in the diallel crosses of melon (Cucumis melo L.) for yield- and quality-related traits. Seven melon (C. melo L.) genotypes were grown and crossed in a complete diallel fashion to produce F1 hybrids. During the 2019 crop season, 49 melon genotypes (7 parents + 42 F1 hybrids) were grown in a randomized complete block design with three replications. Observations were made for seven characters. Analysis of variance revealed significant (P ≤ 0.01) differences among the melon genotypes for harvest age, fruit flesh thickness, fruit total soluble solids, fruit length, and fruit diameter and merely significant differences (P ≤ 0.05) for fruit weight. Combining ability analysis revealed that mean squares due to general combining ability (GCA) were significant for fruit diameter but were nonsignificant for all other traits. However, mean squares due to specific combining ability (SCA) were significant for all traits. The parental genotypes PK-165, PK-464, and PK-669 exhibited the highest and desirable GCA effects for yield and quality traits. Hence, these genotypes could be used to generate high-yielding hybrid/open-pollinated cultivars. GCA:SCA ratios further revealed that the traits of harvest age, fruit flesh thickness, fruit total soluble solids, fruit length, and fruit weight were controlled by dominant gene action, whereas fruit diameter was managed by additive and dominant genes. The majority of the traits were controlled by nonadditive gene action, verifying that the said breeding material could be efficiently used for the production of hybrid cultivars on the basis of heterotic effects.

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Heterosis and combining ability for yield and its related traits in ridge gourd [Luffa acutangula (L.)Roxb.]

Journal of Horticultural Sciences ◽

10.24154/jhs.2019.v14i01.009 ◽

2019 ◽

Vol 14 (1) ◽

pp. 48-57

Author(s):

Varalakshmi B ◽

Pitchaimuthu M ◽

Sreenivasa Rao E

Keyword(s):

Combining Ability ◽

Significant Variation ◽

Gene Action ◽

Fruit Weight ◽

Specific Combining Ability ◽

Additive Gene Action ◽

Fruit Length ◽

Additive Gene ◽

The Mean ◽

Luffa Acutangula

Line × Tester analysis involving three lines and four testers was carried out in ridge gourd [Luffa acutangula (Roxb.) L.]. Significant variation was noticed in the mean performance of the parents and hybrids for all the characters studied except for vine length and fruit girth. The results from GCA and SCA variance indicated the predominance of non-additive gene action for all the traits except fruit girth. Significant heterosis of 177.78% over standard check, Arka Sumeet for fruit weight per plant was expressed by the cross GARG-1 × CO-1. The best general combiners were GARG-1 and Pusa Nutan among the lines, and Jaipur long and CO-1 among testers. Best specific combining ability effects for fruit length and yield (t/ ha) were recorded by the crosses Pusa Nasdar × Arka Sumeet and GARG-1 × CO-1.

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Combining Ability Analysis of Blast Disease Resistance and Agronomic Traits in Finger Millet [Eleusine coracana (L.) Gaertn]

Journal of Agricultural Science ◽

10.5539/jas.v8n11p138 ◽

2016 ◽

Vol 8 (11) ◽

pp. 138 ◽

Cited By ~ 1

Author(s):

Lawrence Owere ◽

Pangirayi Tongoona ◽

John Derera ◽

Nelson Wanyera

Keyword(s):

Disease Resistance ◽

Combining Ability ◽

Finger Millet ◽

Gene Action ◽

Agronomic Traits ◽

The Other ◽

Blast Disease ◽

Additive Gene Action ◽

Gene Effects ◽

Additive Gene

Blast disease is the most important biotic constraint to finger millet production. Therefore disease resistant varieties are required. However, there is limited information on combining ability for resistance and indeed other agronomic traits of the germplasm in Uganda. This study was carried out to estimate the combining ability and gene effects controlling blast disease resistance and selected agronomic traits in finger millet. Thirty six crosses were generated from a 9 × 9 half diallel mating design. The seed from the 36 F1 crosses were advanced by selfing and the F2 families and their parents were evaluated in three replications. General combining ability (GCA) for head blast resistance and the other agronomic traits were all highly significant (p ≤ 0.01), whereas specific combining ability (SCA) was highly significant for all traits except grain yield and grain mass head-1. On partitioning the mean sum of squares, the GCA values ranged from 31.65% to 53.05% for head blast incidence and severity respectively, and 36.18% to 77.22% for the other agronomic traits measured. Additive gene effects were found to be predominant for head blast severity, days to 50% flowering, grain yield, number of productive tillers plant-1, grain mass head-1, plant height and panicle length. Non-additive gene action was predominant for number of fingers head-1, finger width and panicle width. The parents which contributed towards high yield were Seremi 2, Achaki, Otunduru, Bulo and Amumwari. Generally, highly significant additive gene action implied that progress would be made through selection whereas non-additive gene action could slow selection progress and indicated selection in the later generations.

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

Acta Agronomica Hungarica ◽

10.1556/aagr.57.2009.4.4 ◽

2009 ◽

Vol 57 (4) ◽

pp. 417-423 ◽

Cited By ~ 1

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.

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Heterosis and gene action in okra

Bangladesh Journal of Agricultural Research ◽

10.3329/bjar.v32i3.544 ◽

2008 ◽

Vol 32 (3) ◽

pp. 421-432 ◽

Cited By ~ 3

Author(s):

Nandan Mehta ◽

BS Asati ◽

SR Mamidwar

Keyword(s):

Plant Height ◽

Seed Weight ◽

Gene Action ◽

Fruit Weight ◽

Fruit Yield ◽

Additive Gene Action ◽

Fruit Length ◽

Additive Gene ◽

100 Seed Weight ◽

Number Of Seeds

Forty two hybrids generated by crossing three testers with fourteen lines were studied along with parents for studying heterosis and gene action for days to first flowering, days to 50 percent flowering, fruit weight, fruit length, plant height, number of seeds per fruit, 100-seed weight and fruit yield per plant during rainy season and summer season of 2002-03 at Department of Horticulture, Indira Gandhi Agricultural University, Raipur, Chhattisgarh, India. The most heterotic combinations were VRO-6 x Parbhani Kranti, VRO-4 x Parbhani Kranti, Daftari-1 x Arka Abhaya and Kaveri Selection x Ankur Abhaya for fruit yield per ptant. The sca variances for days to fruit flower, days to 50 percent flowering, fruit weight, fruit length, plant height, number of seeds per fruit and 100-seed weight were higher than so gca variance so there is a preponderance of non-additive gene action. The gca variances was greater than sca variances for fruit yield per plant indicating preponderance of additive gene action for this trait. Overall, the results discussed above are quite indicative of the fact that hybrid okra has great potentialities of maximizing fruit yield in Chhattisgarh plains.DOI: http://dx.doi.org/10.3329/bjar.v32i3.544Bangladesh J. Agril. Res. 32(3) : 421-432, September 2007

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Studies on combining ability in high yielding drought tolerant mungbean genotypes under West Bengal condition

Legume Research - An International Journal ◽

10.18805/lr-3537 ◽

2018 ◽

Cited By ~ 1

Author(s):

M Sen ◽

D K De

Keyword(s):

Combining Ability ◽

West Bengal ◽

Gene Action ◽

The Other ◽

Additive Gene Action ◽

Drought Tolerant ◽

Combining Ability Analysis ◽

Additive Gene ◽

Seedling Characters ◽

Half Diallel

Combining ability analysis was carried out in an 8x8 half-diallel fashion in mungbean to understand the combining ability, nature of gene action for thirteen yield and its components in 28 hybrids and their 8 parents. These 8 genotypes were already classified into drought tolerant and drought susceptible types from a laboratory study where PEG (6000) (-3) bar was used to impose drought stress against control for studying the seedling characters. The analysis of variance due to combining ability for the thirteen yield attributing traits in F1 population and their parents revealed that variances due to GCA and SCA were highly significant for all the characters indicating that these traits were controlled by both additive and non-additive gene action. Results also showed that cross combinations producing significantly superior SCA effect generally involved one of the parents with good GCA effect and the other had been either medium or poor combiner. Transgressive breeding has been opined to be useful in such cases. After compilation of the results it was found that only two cross combinations viz. SML-286(S) x B-1(T) and PDM-54(T) x K-851(T) were superior performers with respect to 7 and 5 characters including yield. Therefore, progeny of these two crosses may be pursued for obtaining lines with higher yield and tolerance to drought.

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HERITABILITY FOR COMBINING ABILITY OF SEEDLING VIGOR IN BIRDSFOOT TREFOIL

Canadian Journal of Plant Science ◽

10.4141/cjps72-179 ◽

1972 ◽

Vol 52 (6) ◽

pp. 1059-1065 ◽

Cited By ~ 3

Author(s):

B. E. TWAMLEY

Keyword(s):

Seed Size ◽

Combining Ability ◽

Gene Action ◽

Birdsfoot Trefoil ◽

Seedling Vigor ◽

Additive Gene Action ◽

Predictive Values ◽

Additive Gene ◽

Estimate Heritability ◽

Selection Of

Twenty birdsfoot trefoil families were studied, first, to investigate variation in seed size and seedling vigor; second, to determine predictive values of parental performance; and third, to estimate heritability for combining ability. The experimental material consisted of open-pollination seed collected from 20 parents and 10 daughters of each. It was examined for seed size and was used for a seedling vigor test. Wide variation for both seed size and for seedling vigor existed both within and among families. The performance of the parents with respect to neither seed size nor seedling vigor was a valid indicator of the combining ability of the daughters. Heritability for these traits was low. In the discussion, the postulate was made that in selecting material for the Syn 0 generation of a new cultivar on the basis of combining ability, greater emphasis should be placed on additive gene action. The program would involve the selection of only those plants that, in addition to being high in combining ability themselves, had offspring with a high combining ability average.

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