scholarly journals Combining Ability and Heterosis for Yield and Related Traits in Chili (Capsicum annuum L.)

2019 ◽  
Vol 13 (1) ◽  
pp. 34-43
Author(s):  
Swapan Chakrabarty ◽  
A. K. M. Aminul Islam ◽  
M. A. Khaleque Mian ◽  
Tofayel Ahamed
Keyword(s):  
Combining Ability ◽  
Gene Action ◽  
Fruit Weight ◽  
Fruit Yield ◽  
Fresh Fruit ◽  
Total Production ◽  
Partial Dominance ◽  
Diallel Mating Design ◽  
Hybrid Variety ◽  
Half Diallel

Introduction: An experiment was conducted to study combining ability and heterosis for yield and related traits in chili during November 2015 to September 2017. Materials and Methods: The experimental material consisted of six parents and their fifteen F1’s developed by half diallel mating design. Analysis of variance for combining ability exhibited significant General and Specific Combining Ability (GCA and SCA) effects for all the characters studied. Results: The SCA variance was higher than GCA variance for all the traits except ten fresh fruit weight, fruit length and fruit width indicating the predominance of non-additive type of gene action. The parents P1 and P6 were identified as the best general combiners and the hybrids P1×P6, P1×P4 and P2×P5 were identified as the best specific combinations for fresh fruit yield per plant and related traits. The hybrids P1×P6, P1×P4 and P3×P6 showed significant average heterosis and heterobeltiosis for fresh fruit yield per plant and its related traits. (H1/D)0.5 ratio indicated partial dominance effect of genes for all the traits. Conclusion: Therefore, it may be possible to take advantages of better heterotic effects to be fixed in the later generations to facilitate further selection and best specific combinations for development of the hybrid variety of chili which can help to increase the total production in Bangladesh.

Genetics of physiological and agronomical traits linked to salinity tolerance in tomato

2021 ◽  
Vol 72 (4) ◽  
pp. 280
Author(s):  
Mohammad Moradi ◽  
Hamid Dehghani ◽  
Sied Zabihallah Ravari
Keyword(s):  
Cell Membrane ◽  
Salinity Tolerance ◽  
Combining Ability ◽  
Relative Water Content ◽  
Gene Action ◽  
Fruit Weight ◽  
Fruit Yield ◽  
Salt Tolerant ◽  
Cell Membrane Stability ◽  
Relative Water

Improvement of tomato (Lycopersicon esculentum L.) for growth in saline soils is a major goal of tomato breeders. The aim of this study was to identify the genetic combining ability and genetics of salinity tolerance in tomato. Plant materials were grown under normal (NG) and salinity stress (SSG) conditions. Results showed that the genetic controlling mechanism of salinity-related traits and fruit weight is complex and that all genetic components of additive, non-additive and maternal are involved. The nature of gene action for fruit weight and salinity-related traits was significantly affected by salinity stress. Dominance and additive gene action were predominant under NG and SSG, respectively. Under NG, the best general combiner parent for fruit weight was P3 (salt-tolerant with moderate fruit yield). Under SSG, P1 (highly salt-tolerant with low fruit yield) was the best general combiner parent for fruit weight and exhibited high genetic combining ability for K+/Na+, lipoxygenase activity, proline, relative water content, total carbohydrate and cell membrane stability. With the high frequency of genes effective in salt tolerance, the P1 parent appeared as the best specific mating partner with other parents under SSG. Simultaneous selection for fruit weight and surrogate traits (cell membrane stability, proline and relative water content) in a population derived from the P1 × P5 (susceptible with high fruit yield) cross could result in a salt-tolerant tomato genotype.

scholarly journals Combining Ability And Heterosis In Snakegourd (Tricosanthes Cucurminata L)

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

scholarly journals Half Diallel Analysis for Biochemical and Morphological Traits in Cultivated Eggplants (Solanum melongena L.)

Agronomy ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1769
Author(s):  
Debi Rani Datta ◽  
Mohd Y. Rafii ◽  
Azizah Misran ◽  
Mashitah Jusoh ◽  
Oladosu Yusuff ◽  
...  
Keyword(s):  
Combining Ability ◽  
Fruit Weight ◽  
General Combining Ability ◽  
Fruit Yield ◽  
Soluble Solids ◽  
Width Ratio ◽  
Total Phenol Content ◽  
Fruit Length ◽  
Half Diallel ◽  
Fruit Diameter

Eleven morphologically diverse cultivated eggplant accessions were used for hybridization following half diallel mating design to obtain 55 hybrids. Evaluation of hybrids along with the parents was conducted over two locations followed by randomised complete block design with three replications to study gene action and combining ability of 15 morphological and biochemical traits. The analysis of variance indicated highly significant differences among the environments and interaction of genotype and environment, except for fruit length to width ratio. Additive gene effects were significant for the inheritance of these traits and expression of these additive genes were greatly affected by environments. The general combining ability (GCA) was greater than their respective specific combining ability (SCA) for all traits except for fruit yield per plant. High values of GCA and SCA effects for characters of interest were dispersed among different genotypes. From this study it was observed that the best parental line was BT15 based on days to first flowering, total number of fruits per plant, total soluble solids and total phenol content. Besides, the parent BM5 showed good general combining ability effects for fruit yield per plant, fruit length and fruit length to width ratio and the parent BB1 performed good general combining ability for fruit diameter, fruit girth and fruit weight. Besides, other parents showed the best performance for only one trait. On the other hand, the hybrid BT6 × BT15 was reported bearing early flowering with high total phenol content and the hybrid BM9 × BB26 has high fruit yield with high soluble solids. Besides, the hybrid BM9 × BB1 has a high fruit diameter and fruit weight. All other hybrids except for these three (BT6 × BT15, BM9 × BB26 and BM9 × BB1) were shown the best performance for only one trait. Hence, based on the desired trait, the hybrid can be selected for future use after large scale evaluation.

scholarly journals COMBINING ABILITY ANALYSIS FOR FRUIT YIELD AND ITS COMPONENT TRAITS IN BHENDI (ABELMOSCHUS ESCULENTUS (L.) MOENCH)

2021 ◽  
Vol 21 (No 1) ◽  
Author(s):  
C. Praveen Sampath Kumar ◽  
T. Tamil Mathi ◽  
J.L. Josh ◽  
Darling B. Suji ◽  
Ajish Muraleedharan
Keyword(s):  
Plant Breeding ◽  
Combining Ability ◽  
Diallel Analysis ◽  
Fruit Weight ◽  
Fruit Yield ◽  
Flowering Plant ◽  
Fruit Length ◽  
Component Traits ◽  
Additive Gene ◽  
Half Diallel

The present investigation was undertaken to evaluate six parents and fifteen hybrids through half-diallel mating system to study general and specific combining ability effects and genetic analysis for various yield and yield attributing characters. Six parents viz., Arka Anamika (P1), Thanvi 66 (P2), Villupuram Local (P3), Dhaanya (P4), Ankur 41 (P5) and Varsha Uphar (P6) were crossed in half-diallel fashion at the Plant Breeding Farm, Department of Genetics and Plant Breeding, Faculty of Agriculture, Annamalai University. Resulting fifteen hybrids along with their parents were evaluated for their combining ability. Observations were recorded on single plant basis. The observations were made on characters namely, days to first flowering, plant height at maturity, number of primary branches per plant, number of nodes per plant, number of fruits per plant, number of seeds per fruit, fruit length, fruit girth, single fruit weight and fruit yield per plant. In half-diallel analysis, the variance of the genotype for all the characters were highly significant indicating high genetic variability among the parents studied. The variance due to GCA was higher than the corresponding variance due to SCA for most of the characters except number of fruits per plant, fruit length and fruit girth. The combining ability variance revealed the preponderance of additive gene action for all the characters studied. The parents P1 and P6 were found as good general combiner. Based on the sca effects, the hybrid P1 x P6 considered as the best followed by crosses P2 x P4 and P3 x P4 considered as the better hybrids.

scholarly journals Genetic Control and Heterosis of Quantitative Traits in Several Local Eggplant Genotypes

2017 ◽  
Vol 9 (4) ◽  
pp. 520-524 ◽  
Author(s):  
Ndueso Michael AKPAN ◽  
Peter Ejimofor OGBONNA ◽  
Vincent Nduka ONYIA ◽  
Emeka Chibuzor OKECHUKWU ◽  
Ima-obong Ignatius DOMINIC ◽  
...  
Keyword(s):  
Quantitative Traits ◽  
Gene Action ◽  
Agronomic Traits ◽  
Fruit Yield ◽  
Yield Traits ◽  
Breeding Method ◽  
Gene Effect ◽  
Hybrid Combination ◽  
Diallel Mating Design ◽  
Half Diallel

The present study was performed to assess the nature of gene action governing inheritance of agronomic traits in eggplant genotypes and extent of mid parent heterosis (MPH) and better parent heterosis (BPH) in six eggplant hybrids generated from four superior and optimally divergent genotypes of eggplant namely ‘Yalo’, ‘Uyo’, ‘K3’ and ‘Iyoyo’ selected from the germplasm and were crossed in 4×4 half diallel mating design. The six hybrids were found to show a significant (p< 0.05) positive MPH in yield traits and the highest was obtained in the hybrid ‘Yalo’ × ‘K3’ for number of fruits per plant (158.90%) and ‘K3’ × ‘Iyoyo’ for fruit yield per plant (63.14%) and fruit yield per hectare (62.20 %). The hybrid combinations ‘Yalo’ × ‘K3’ and ‘K3’ × ‘Iyoyo’ had significant positive BPH for the number of fruits per plant, 104.08% and 42.43%, respectively. For fruit yield per plant, the hybrid combination ‘Yalo’ × ‘K3’ (7.93%), ‘Uyo’ × ‘K3’ (8.48%) and ‘K3’ × ‘Iyoyo’ (12.26%) had significant positive BPH. However, the hybrid ‘K3’ × ‘Iyoyo’ (11.51%) showed significant positive BPH in fruit yield per hectare. Dominance and dominance × dominance gene effect were found to be positively higher in magnitude in all crosses for number of fruits per plant, fruit yield per plant and fruit yield per hectare. The prevalence of dominance and dominance × dominance gene effect in the yield traits indicate heterosis breeding as the best breeding method to improve the productivity of eggplant.

scholarly journals Combining Ability and Gene Action

2014 ◽  
Vol 11 (2) ◽  
pp. 117-127
Author(s):  
RS Verma ◽  
Narendra Pratap ◽  
DK Dubey ◽  
SS Singh
Keyword(s):  
Combining Ability ◽  
Rainy Season ◽  
Gene Action ◽  
Fruit Weight ◽  
Summer Season ◽  
Fruit Yield ◽  
Mating Design ◽  
Component Traits ◽  
Parental Lines ◽  
Fruit Diameter

The investigation was carried out to get information regarding magnitude of combining ability and nature of gene action for fruit yield and several other yield attributing traits following line × tester mating design involving 12 lines and 3 testers and their 36 hybrids tested in two environments viz., summer and rainy season 2010 at Research Farm of Department of Vegetable Science, N. D. University of Agriculture & Technology, Kumarganj, Faizabad, UP, India. From the estimate of gca effects, among the parental lines NDBT-13, NDBT-15 and NDBT-19 were identified as superior donor for both seasons and NDBT-10 for summer season and among the testers Kalyanpur Sona for summer season and Pusa Do Mausami for rainy season for fruit yield per plant and its yield contributing traits like number of fruits per plant and average fruit weight. Eight crosses displayed desirable significant sca effects in both seasons for fruit yield per plant. Among these eight crosses the best cross combinations based on desirable sca effects for fruit yield per plant were NDBT-19 × Pusa Do Mousami in summer season while NDBT-8 × Pusa Do Mousami, NDBT-15 × NDBT-12 and NDBT-10 × Pusa Do Mousami in rainy season. These crosses have more number of fruits per plant, average fruit weight, fruit diameter and other component traits in both seasons. DOI: http://dx.doi.org/10.3329/sja.v11i2.18407 SAARC J. Agri., 11(2): 117-127 (2013)

Combining ability analysis for quantitative traits in red sweet pepper (Capsicum annuum L. var. grossum Sendt.) grown under protected condition

2021 ◽  
Vol 50 (1) ◽  
pp. 165-169
Author(s):  
Cherry Nalwa ◽  
Manish Kumar
Keyword(s):  
Combining Ability ◽  
Quantitative Traits ◽  
Fruit Set ◽  
Sweet Pepper ◽  
Fruit Weight ◽  
Fruit Yield ◽  
Gene Effects ◽  
Combining Ability Analysis ◽  
Additive Gene ◽  
Half Diallel

Six red sweet pepper genotypes viz., RSPUHF-1, RSPUHF-2, RSPUHF-3, RSPUHF-4, RSPUHF-5 and RSPUHF-7 and their crosses using half-diallel excluding reciprocals were evaluated for combining ability to obtain desired hybrids. Analysis of variance for combining ability revealed that variances due to general combining ability (GCA) and specific combining ability (SCA) were highly significant for all the characters indicating the importance of additive and non-additive gene effects. RSPUHF-3 (‒1.42* and ‒1.5*) and RSPUHF-7 (‒1.25* and ‒1.54*) were found as reliable combiners for earliness and maturity. Whereas, the parents RSPUHF-1 (0.53*, 0.78*, ‒0.5, 0.12*, 0.25*), RSPUHF-2 (1.49*, 2.19*, 6.41*, 0.63*, 2.21*) and RSPUHF-4 (0.69*, 0.9*, 9.92*, 0.47*, 1.28*) were good general combiners for fruit set per cent, number of fruits per plant, fruit weight, fruit yield per plant and fruit yield per m2. Amongst, the crosses, RSPUHF-3 x RSPUHF-2 (0.95*), RSPUHF-4 x RSPUHF-2 (0.77*) and RSPUHF-5 x RSPUHF-2 (0.86*) were found to be the best specific combinations for increased fruit yield and component characters. Further, on the basis of per se performance it may be identified for release after multi location testing the above hybrids have been found to be the most promising for exploitation of heterosis.

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.

Sign in / Sign up

Export Citation Format

Share Document