Combining ability analysis in mungbean [Vigna radiata(L.) Wilczek]

A diallel method was employed in which eight genotypically diverse lines of mungbean were crossed among themselves in all possible combinations excluding reciprocals. The mean square due to general combining ability (GCA) and specific combining ability (SCA) were significant for all the characters except mean square due to (SCA) for clusters per plant and seed yield per plant indicating importance of both additive as well as non-additive gene action. The estimates of variances due to specific combining ability were higher than general combining ability for all the traits except days to 50 % flowering, primary branches per plant, clusters per plant and seed yield per plant pointed out to be the preponderance of non-additive gene effects in the expression of these characters. Whereas predictability ratios were greater than the value of 0.5 for days to 50 % flowering, primary branches per plant, clusters per plant and seed yield per plant indicating the predominance of additive gene action for these characters. However, predictability ratio exhibited less than 0.5 values for rest of the characters indicating the predominance of non- additive gene action. The good general combiners for seed yield per plant were BM-4, PDM-139, ML-131, and IPM 99-125. The best specific cross combinations wereRMG-344 x RMG-1045, RMG-1035 x RMG-1045 and BM-4 x PDM-139. showed the highest positive significant SCA effect for seed yield per plant. These cross combinations could be utilized for further use in breeding programme for improvement in yield of mungbean.

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Combining ability and heterosis studyin maize inbreds throughout diallel mating design

Bangladesh Journal of Agricultural Research ◽

10.3329/bjar.v43i4.39158 ◽

2018 ◽

Vol 43 (4) ◽

pp. 599-609

Author(s):

ANMS Karim ◽

S Ahmed ◽

AH Akhi ◽

MZA Talukder ◽

A Karim

Keyword(s):

Grain Yield ◽

Plant Height ◽

Combining Ability ◽

Gene Action ◽

General Combining Ability ◽

Specific Combining Ability ◽

Gene Effects ◽

Additive Type ◽

Additive Gene ◽

Ear Height

Combining ability effects were estimated for grain yield and some other important agronomic traits of maize in a 7×7 diallel analysis excluding reciprocals. The variances for general combining ability (GCA) were found significant for yield, days to pollen shedding, days to silking and ear height while it was found non-significant for plant height and number of kernels/ear. Non-significant general combining ability (GCA) variance for plant height and number of kernels/ear indicates that these two traits were predominantly controlled by non- additive type of gene action. Specific combining ability (SCA) was significant for all the characters except yield and days to silking. Non-significant specific combining ability (SCA) variance for yield and days to silking suggests that these two traits were predominantly controlled by additive type of gene action. Both GCA and SCA variances were found significant only in days to pollen shedding and ear height indicated the presence of additive as well as non additive gene effects for controlling the traits. However, relative magnitude of these variances indicated that additive gene effects were more prominent for all the characters studied except days to silking. Parent BIL95 was the best general combiner for both high yield and number of kernels/ear and parent BML4 for dwarf plant type. Two crosses (BML4× BML36 and BIL114× BIL31) exhibited significant and positive SCA effects for grain yield involved low × average and average × average general combining parents. The range of heterosis expressed by different crosses for grain yield and days to silking was from -65.83 to 21.26 percent and -17.85 to 8.22 percent, respectively.. The better performing three crosses (BIL114×BIL31, BIL138×BIL95 and BIL31×BIL95) can be utilized for developing high yielding hybrid varieties as well as for exploiting hybrid vigour.Bangladesh J. Agril. Res. 43(4): 599-609, December 2018

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Hybrid tea-roses under controlled light conditions. 4. Combining ability analysis of variance for percentage of flowering in F1 populations.

Netherlands Journal of Agricultural Science ◽

10.18174/njas.v28i1.17042 ◽

1980 ◽

Vol 28 (1) ◽

pp. 36-39

Author(s):

D.P. de Vries ◽

L. Smeets ◽

L.A.M. Dubois

Keyword(s):

Analysis Of Variance ◽

Combining Ability ◽

Gene Action ◽

General Combining Ability ◽

Light Conditions ◽

Additive Gene Action ◽

Combining Ability Analysis ◽

Growth Room ◽

Additive Gene ◽

Flowering Ability

F1 populations of the hybrid tea-roses Sonia, Baccara, Ilona, Prominent and Zorina were grown in a growth room under 8 W/m2 at 20 deg C with an 8 h day. The inheritance of flowering ability under low irradiance was mainly controlled by additive gene action. Prominent and Zorina had a good general combining ability for flowering under low irradiance. [For part 3 see HcA 49, 5235]. (Abstract retrieved from CAB Abstracts by CABI’s permission)

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Heterosis and combining ability analysis for yield and yield contributing traits in velvet bean Mucuna pruriens (L.) DC

Legume Research - An International Journal ◽

10.18805/lr-3823 ◽

2017 ◽

Author(s):

A. Chinapolaiah ◽

K. Hima Bindu ◽

G. N. Manjesh ◽

N. Hariprasad Rao ◽

S. Sudheer Kumar ◽

...

Keyword(s):

Seed Yield ◽

Combining Ability ◽

Gene Action ◽

Breeding Programme ◽

Velvet Bean ◽

Additive Gene Action ◽

Pod Yield ◽

Combining Ability Analysis ◽

Additive Gene ◽

Pod Length

A field experiment was conducted to know the gene action and selection of superior parents of velvet bean for hybridization. The heterosis and combining ability study was carried out using 6x6 half diallel mating design excluding reciprocals. Combining ability analysis revealed that magnitude of sca variance was greater than gca variance suggesting the predominance of non additive gene action for most of the traits except days to 50 per cent flowering, number of flowers per inflorescence, number of pods per bunch and 100 seed weight where gca variance was greater than sca variance indicating predominance of additive gene action. Based on gca effects, parents Arka Dhanwantari, IIHR Selection 8 and IIHR Selection 2 were best general combiners for the traits such as number of flowers per inflorescence, pod length, pod weight, number of bunches per plant, number of pods per bunch, dry pod yield and seed yield per plant which can be used in future breeding programme. Specific combining ability studies indicated cross IIHR Selection 2 x IIHR Selection 8 as best specific combiner for the economically important traits viz., pod length, pod weight, dry pod yield per plant and seed yield per plant. The cross IIHR Selection 8 x IIHR Selection 3 was recorded high heterotic effects for dry pod yield per plant, seed yield per plant and test weight of the seed. The cross IIHR Selection 2 x IIHR Selection 8 as superior hybrid as recorded high heterobeltiosis for days to 50% flowering, pod length, pod weight, dry pod yield per plant and seed yield per plant and days to maturity which can be exploited in future breeding programme.

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Combining Ability and Heterosis for Capsaicinoids in Capsicum pubescens

HortScience ◽

10.21273/hortsci.36.7.1315 ◽

2001 ◽

Vol 36 (7) ◽

pp. 1315-1317 ◽

Cited By ~ 11

Author(s):

Yayeh Zewdie ◽

Paul W. Bosland ◽

Robert Steiner

Keyword(s):

Combining Ability ◽

Recurrent Selection ◽

Gene Action ◽

Diallel Analysis ◽

General Combining Ability ◽

Specific Combining Ability ◽

Breeding Method ◽

Additive Gene Action ◽

Gene Effect ◽

Additive Gene

The inheritance of capsaicinoid content was studied in five Capsicum pubescens Ruiz & Pav. genotypes using diallel analysis. General combining ability and specific combining ability effects were significant for all capsaicinoids studied, indicating additive and nonadditive gene actions are present. The association of high capsaicinoid contents with high positive general combining ability of the parents also indicates the predominance of additive gene action in capsaicinoid inheritance. Because of the predominant additive gene effect, recurrent selection would be a good breeding method to increase capsaicinoid level in the population studied. Heterosis was observed in hybrids for some of the capsaicinoids, suggesting that F1 hybrids could also be used to increase capsaicinoid content.

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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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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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Studies on Combining Ability for Seed Yield and Its Related Traits in Blackgram [Vigna mungo (L.) Hepper]

Legume Research - An International Journal ◽

10.18805/lr-4187 ◽

2020 ◽

Author(s):

Ranjana Patial ◽

R. K. Mittal ◽

V. K. Sood ◽

Shahnawaz Ahmed

Keyword(s):

Seed Yield ◽

Combining Ability ◽

Genetic Variance ◽

Gene Action ◽

Specific Combining Ability ◽

Breeding Programme ◽

Plant Seed ◽

Ability Estimates ◽

Additive Gene ◽

Transgressive Segregants

An experiment was carried out in blackgram using line x tester mating design to estimate the GCA effect of parents and SCA effect of 54 hybrids for yield and its traits using 27 lines and two testers. The relative estimates of variance due to specific combining ability (SCA) were higher than general combining ability (GCA) variances for all twelve traits, indicating predominance of non-additive gene action. Combining ability estimates showed significant genetic variance in lines for all traits whereas testers had significant genetic variance for nine traits. On the basis of GCA effects, among the lines and testers IC-436910, IC-413306, IC-398973, IC-343885 and HPBU-111 respectively, were good combiners for most of the traits and can be used in future breeding programme. Specific combining ability studies indicated cross IC-436910 x HPBU-111 as best specific combiner for the economically important traits viz., plant height, branches per plant, seed yield per plant and days to 75% maturity. Such crosses could be further exploited to obtain transgressive segregants in future breeding programme.

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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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Combining Ability And Heterosis In Snakegourd (Tricosanthes Cucurminata L)

Bangladesh Journal of Plant Breeding and Genetics ◽

10.3329/bjpbg.v23i2.9318 ◽

1970 ◽

Vol 23 (2) ◽

pp. 1-6

Author(s):

R Podder ◽

MG Rasul ◽

AKMA Islam ◽

Mak Mian ◽

JU Ahmed

Keyword(s):

Combining Ability ◽

Gene Action ◽

Female Flower ◽

Fruit Yield ◽

High Yield ◽

Additive Gene Action ◽

Combining Ability Analysis ◽

Additive Gene ◽

Half Diallel ◽

Fruit Diameter

A half diallel set of five parents and their 10 F1’s were studied to determine the combining ability and magnitude of heterosis for eight important characters in snakegourd at the experimental field of Bangabandhu Sheikh Mujibur Rahman Agricultural University during April to July, 2004. Combining ability analysis revealed that both general and specific combining ability variances were significant for all the characters except fruit diameter and fruit yield per plant. Predominance of additive gene action was noted for all the characters except days to first female flower where non-additive gene action was predominant. Parent P1 was the best general combiner for fruit yield and some yield contributing characters. Among the crosses P2 X P3, P1 X P2 and P1 X P4 were the best specific combiner for fruit yield and some of yield contributing characters. Both positive and negative heterosis was obtained of which few hybrids showed desirable and significant values. P2 X P5 showed the highest significant mid parental heterotic value for earliness and high yield whereas, P1 X P2, P2 X P3, P2 X P5 and P3 X P4 showed the highest significant better parent heterotic effect for earliness and high yield. Key words: Snakegourd (Trichosanthes cucurminata L.); combining ability; heterosis; fruit yieldDOI: http://dx.doi.org/10.3329/bjpbg.v23i2.9318 Bangladesh J. Pl. Breed. Genet., 23(2): 1-6, 2010

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Combining Ability Analysis of Heat Tolerance in Gossypium hirsutum L.

Czech Journal of Genetics and Plant Breeding ◽

10.17221/3678-cjgpb ◽

2011 ◽

Vol 41 (No. 1) ◽

pp. 23-28 ◽

Cited By ~ 4

Author(s):

T. Azhar M ◽

A. Khan A ◽

A. Khan I

Keyword(s):

Gossypium Hirsutum ◽

Heat Tolerance ◽

Combining Ability ◽

Specific Combining Ability ◽

Gossypium Hirsutum L ◽

Gene Effects ◽

Combining Ability Analysis ◽

Additive Gene ◽

Significant Comparison ◽

Efficient Transfer

In order to study the genetic control of heat tolerance, four varieties/lines of Gossypium hirsutum L., namely MNH-554, Cocker-304, Delcerro and Albacala (71) 1190, were crossed in all possible combinations. Heat tolerance of 12 hybrids and their parents was measured at reproductive phase using an electrolyte leakage technique. The genetic analysis of the data showed significant effects of specific combining ability and reciprocals, but the effect of general combining ability appeared to be non-significant. Comparison of the parents for heat tolerance revealed that Delcerro and MNH-554 were the best general combiners for the character. The crosses Cocker-304 × Delcerro and Albacala (71) 1190 × MNH-554 were determined as the best combinations for heat tolerance and they involved one good general combiner as a parent. Significant effects due to specific combining ability indicated the importance of non-additive gene effects controlling heat tolerance. This information suggests that development of heat tolerance in the present plant material may be difficult; therefore it is necessary to design a specific breeding programme for efficient transfer of the trait.  

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