Analysis of Heterosis in Indian bean (Lablab purpureus (L.) Sweet)

Pesquisa Agropecuária Brasileira, 2008

The objective of this work was to determine the combining ability and heterosis, for productivity and yield components, in diallel hybrids derived from crossings between BRSMG-Talismã, IPR Uirapuru, FT Soberano, BRS Campeiro, IAC Tybatã, and IPR Juriti parent cultivars. Fifteen hybrids were generated from diallel crosses, excluding reciprocals. The general and specific combining abilities were significant for plant height, number of pods per plant, number of seeds per plant, number of seeds per pod, 50-seed weight, and grain yield, indicating the occurrence of both additive and nonadditive genetic effects. The best strategy to be adopted is the use of BRS Campeiro, FT Soberano and BRSMG-Talismã cultivars in common bean breeding programs involving selection. The most promising combinations were 'IPR Uirapuru' x 'IAC Tybatã', 'IPR Uirapuru' x 'FT Soberano', 'BRS Campeiro' x 'IPR Juriti', and 'BRS Campeiro' x 'IAC Tybatã'....

International Journal of Chemical Studies, 2017

Lablab purpureus (L.) Sweet (Syn. Dolichos lablab L., 2n=22), self-pollinating crop, is an important legume as well as vegetable crop cultivated in India. In self-pollinated crop, variability is often created through hybridization between carefully chosen parents. The scope of exploitation of hybrid vigour will depend on the direction and magnitude of heterosis. In the present investigation, information on magnitude on heterosis were obtained for green pod yield per plant and its related components adopting full diallel analysis involving six diverse parents and its resultant thirty hybrid of vegetable Indian bean tested at Regional Horticulture Research Station, Navsari Agricultural University, Navsari during late in a randomized block design with three replications. Significant to highly significant positive heterosis for green pod yield per plant and its component characters were recorded by GNI-7 × GNI-5, GNI-5 × GNI7, GNI-4 × GNI-7, GNI-7 × GNI-4, GNI-7 × GNI-14, GNI-14 × GNI-7...

The Indian Journal of Agricultural Sciences

Genetic study conducted for yield and its traits in Indian bean [Lablab purpureus (L.) Sweet] revealed that heterosis over better parents was found to the extent of 130.78 and 142.27% for green pod yield/plant, 77.22 and 150.52% for number of pods/plant, 16.41 and 37.16% for pod length, 29.70 and 43.41% for pod width, 16.67 and 25.00% for number of seeds/pod, 54.08 and 57.14% for 100-seed weight, 1.46 and 24.56% for seed length, 6.61 and 26.27 % for seed width, 31.40 and 41.10 % for seed thickness, –31.27 and –17.08% for days to first flowering, –30.39 and –14.47% for days to first picking and 5.37 and 10.83 % for fruit set per cluster. The parents KDB 415, VRSEM 923, VRSEM 8 and VRSEM 11 were observed to be good combiners for most of yield contributing characters whereas, the crosses VRSEM 186 × VRSEM 860, VRSEM 11 × VRSEM 894, VRSEM 11 × VRSEM 860, HADB 4 × VRSEM 887 and VRSEM 8 × VRSEM 860 were observed to be most promising combinations for earliness and yield may be advanced for...

Research Paper, 2019

A study was conducted in ricebean [Vigna umbellata (Thunb.) Ohwi and Ohashi] at Department of Organic Agriculture, CSKHPKV, Palampur to assess the extent of heterosis for eleven characters including grain yield per plant. Six lines and two testers were crossed in line × tester mating design to develop 12 F1 hybrids. The analysis of variance revealed considerable genetic differences among the genotypes. The variance due to parents was significant for all the traits except pods per cluster whereas variance due to crosses was significant all the traits under study. The variance due to parents vs hybrids was also highly significant for all the traits. Among the parents, RBHP-108 (11.95 g), RBHP- 43(11.94g), RBHP-36(11.33g), RBHP-107(11.22g) and RBHP-38(11.00g) were the highest yielders whereas among the hybrids, RBHP-36 x RBHP-900(14.78g), RBHP- 61x2007-2(14.42g) and RBHP-43x2007-2(12.67g) recorded highest grain yield per plant. Two crosses RBHP-36x2007-2(96 days) and RBHP-38x2007-2(96.33) were significantly early among all the crosses. Results indicated an appreciable amount of heterosis for all the traits under study and varied from character to character. Days to flowering, days to maturity and plant height showed significant negative heterotic effect over mid parent and better parent in 6 crosses viz; RBHP-36 × PRR-2007-2, RBHP-38 × PRR-2007-2, RBHP- 38 × RBHP-900, RBHP-43 × RBHP-900, RBHP-61 × RBHP-900 and RBHP-108 x RBHP-900. Significant positive heterosis for grain yield was observed for 2 crosses viz; RBHP-36 × RBHP-900 and RBHP-61 x PRR-2007-2.

Journal of Applied Biosciences, 2013

Objective: A study to estimate better parent and economic heterosis in an 8x8 diallel crosses of common beans (Phaseolus Vulgaris L.) was undertaken at Mandura, North Western Ethiopia. Methodology and Results: Eight parents and their 28 F1 diallel crosses were grown in a randomized complete block design. Yield and its components, architectural, and phenological traits were considered. Statistically significant differences were observed between the 36 genotypes for most of the traits studied. Analysis of better parent and economic heterosis respectively revealed 16 and 14 crosses out of 28 showed significant heterosis for yield per plant. Among which 12 and 7 crosses in the same order were positive. The extent of better parent heterosis for yield ranged from-31.14% (Dimtu x Tabor) to 114.1% (MAM-41 x Tabor). The maximum economic heterosis (60.58 %) was observed from the hybrid MAM-41 x Tabor .Significant (P<0.05 or P<0.01) better parent heterosis was also observed for yield-associated traits. Conclusions and recommendation: In this study, expression of significant better parent heterosis for grain yield and other important traits was frequent in combinations of parents from different growth habits (MAM-41 x Tabor, Roba-1 x SK 93263), seed color (Tabor x Red wolayta, BELDAKMI RR 5 x SK 93263, Dimtu x Zebra), and seed size (Roba-1 x Tabor). The extent of percent better parent and economic heterosis like in the cross MAM-41 x Tabor with 114.103 % seed yield better parent heterosis and 60.6 % economic heterosis suggested that this hybrid could be further considered in the breeding program aiming both for segregant breeding and hybrid development.

International Journal of Current Microbiology and Applied Sciences, 2017

2020

Arastirmada, tester olarak iki adet kuru fasulye (Phaseolus vulgaris L.) (Great Northern 59 ve Alberto) cesidi ve bir adet bombay fasulyesi (Phaseolus coccineus L.) ve ana olarak ise 5 fasulye (PV04001, PV05023, PV04042, PV04026 ve PV04032) hatti arasinda melezleme yapilmistir. Bu calisma Line x Tester metoduna gore F1 melezleri elde edilmistir. Bu arastirma Tesaduf Bloklari Deneme desenine gore uc tekerrurlu olarak tam kontrollu Selcuk Universitesi Deneme serasinda kurulmustur. F1 generasyonunda tane verimi icin eklemeli olmayan gen etkileri ve dar anlamda kalitim dereceleri dusuk olarak tespit edilmistir. F1 generasyonunda heterosis ve heterobeltiosis degerleri tane verimi icin pozitif olmustur.

Euphytica, 1993

Divergence of 25 accessions of Brassica juncea of Indian, CIS (Commonwealth of Independent States, former USSR) and synthetic origin was studied by D 2 analysis. On the basis of divergence, ten accessions were selected and crossed in a diallel fashion without reciprocals to study the combining ability and heterosis. None of the accessions was found to be a good general combiner for all the nine quantitative characters that were studied. Significant heterosis over better parent for single plant yield was recorded in CIS x Indian and synthetic x CIS crosses (5 each) followed by Indian x synthetic types (3). The analysis of component characters showed that the mean performance of the majority of hybrids was intermediate for five out of six yield attributing traits, thus exhibiting dominance or partial dominance effect. To estimate the contribution of such yield attributing traits towards heterosis for yield, a comparison was made among three parameters viz. heterosis over mid parent (MP), better parent (BP) and better yielding parent (BYP) of the concerned hybrid. It was observed that estimation of heterosis from BYP was a more accurate method to determine the contribution of component characters towards yield heterosis than the analysis based on MP and BR From the component character analysis, it was concluded that characters like number of primary and secondary branches, number of siliqua per plant and siliqua density contributed significantly towards heterosis in yield. Plot level yield trials of two selected hybrids (Skorospieka II x RH30 and Donskaja IV x Varuna) over two growing seasons revealed 29 .4 to 91.8% heterosis over BYP.

The Pharma Innovation Journal, 2021

An experiment was conducted for the study of heterosis and combining ability in Indian mustard, (Brassica juncea L.) using 7×7 half diallel mating design along with their parents. Data were recorded for eleven quantitative characters. Analysis of variance (ANOVA) of design of experiment showed significant differences between all the treatments for all the characters, indicating that sufficient variability were present among the treatments for all the characters studied. The results of ANOVA for combining ability showed that, the variances due to general combining ability (GCA) and specific combining ability (SCA) were significant for all the character except days to maturity (for SCA variance only). Results revealed operation of both additive and non-additive gene action with preponderance of non-additive gene action for most of the traits except days to fifty per cent flowering, days to maturity and plant height. Among the seven parents, two parents namely Varuna and RAURD 14-18 showed significant positive GCA effects for seed yield per plant. On the basis of SCA effects the best cross combinations selected for seed yield per plant were RAURD 14-18 × RAURD-214, RAURD14-18 × JD-6 and VARUNA × RGN-73. Whereas, cross combinations RGN-73 × RAURD-214 (-2.54), VARUNA × JD-6 (-2.13) and KRANTI × RAURD-214 (-2.06) were identified superior for earliness and days to maturity. For seed yield per plant, the only cross combination RAURD 14-18 × RAURD-214 was identified as the best heterotic cross for all three types of heterosis, estimated over best check NRCHB-101. Hence, the result may suggested that the female parent of best heterotic cross combination, may be converted into CMS line and male as restorer line for its commercial exploitation after reexamining the CMS effect on the identified performance.

Notulae Botanicae Horti Agrobotanici Cluj-Napoca, 2011

The heterosis and combining ability of four rapeseed (Brassica napus L.) genotypes were estimated using diallel crosses. An experiment was conducted at Uludag University, Bursa, Turkey, during the 2005-2006 and 2006-2007 growing seasons using 4x4 full diallel crosses. All of the 12 F1 hybrids and their parents were planted in a randomized complete block design with three replications. The data obtained from the experiment were subjected to an analysis of variance. The analysis of variance indicated significant differences among parents and their hybrids in the F1 generation for all the characters studied except for 1000-seed weight, which was non-significant. Positive better-parent heterosis for seed yield per plant were found in all 12 hybrids tested. An analysis of the components of combining ability showed that general combining ability (GCA) and reciprocal combining ability (RCA) were highly significant (p ≤ 0.01) for plant height and number of pods per main raceme, whereas spec...