scholarly journals Investigation of combining ability and superiority percentages for yield and some related traits in yellow maize using line × tester analysis

2020 ◽  
pp. 5-14
Author(s):  
Maamoun A. Abdel-Moneam ◽  
M. S. Sultan ◽  
Waleed A. E. Abido ◽  
Ágnes Hadházy ◽  
S. A. Sadek ◽  
...  
Keyword(s):  
Grain Yield ◽  
Combining Ability ◽  
Block Design ◽  
General Combining Ability ◽  
Kernel Weight ◽  
Specific Combining Ability ◽  
F1 Hybrids ◽  
Gene Effects ◽  
Additive Gene ◽  
Ear Height

Combining ability estimation is an important genetic attribute for maize breeders in anticipating improvement in productivity via hybridization and selection. This research was carried out to investigate the genetic structure of the 27 F1 maize hybrids established from nine lines derived from Maize Research Department and three testers, to determine general combining ability (GCA), determine crosses showing specific combining ability (SCA) and superiority percentages for crosses. Nine lines, three testers, 27 F1 hybrids and two check commercial hybrids (SC162 and SC168) were studied in randomized complete block Design (RCBD) with three replications during 2016. The results of mean squares showed that significant and highly significant for most studied traits (days to 50% tasseling, days to 50% silking, plant and ear height, ear position, ear length, no. of kernels per row, 100-kernel weight and Grain yield). Estimates of variance due to GCA and SCA and their ratio revealed predominantly non-additive gene effects for all studied traits. Lines with the best GCA effects were: P2 (line 11) and P6 (line 21) for grain yield, for testers Gm174 and Gm1021 had significant GCA effects for grain yield. The hybrids P5×Gm1021, P6×Gm1021, P7×Gm1021, P8×Gm1002, P9×Gm1002 had significant and negative SCA effects for grain yield. Crosses P1×Gm174, P2×Gm1002, P5×Gm1021, P6×Gm174, P6×Gm1021, P7×Gm1021, P8×Gm1002, P9×Gm1021 were the best combinations manifested and significant superiority percentages over than check varieties (SC162 and SC168) for most studied traits. Therefore, these hybrids may be preferred for hybrid crop development. Abbreviations: GCA general combining ability; SCA specific combining ability

Combining ability and heterosis studyin maize inbreds throughout diallel mating design

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

scholarly journals GENERAL AND SPECIFIC COMBINING ABILITY OF MAIZE TRAITS STUDIED IN SINGLE CROSS HYBRIDS

2018 ◽  
Vol 49 (6) ◽  
Author(s):  
Hussain & Hussen
Keyword(s):  
Leaf Area ◽  
Combining Ability ◽  
Block Design ◽  
Diallel Cross ◽  
General Combining Ability ◽  
Kernel Weight ◽  
Specific Combining Ability ◽  
Single Cross ◽  
Ear Height ◽  
Single Cross Hybrids

The study was carried out  using full diallel cross between six inbred lines of maize, parents and their F1 including reciprocals were planted in 19th march 2014 at field of agriculture college, Duhok University. All treatments arranged in randomized complete block design (RCBD) with three replications to estimate the general and specific combining ability of maize traits in single cross hybrids. According to the mean square values of The results showed that the general combining ability, specific combining ability, and reciprocal combining ability, the general combining ability exhibited significant variance for all traits except days to 75% tasseling and number of kernels row-1, whereas, specific combining ability was non significant for leaf area though its prerogative  for all other traits. The reciprocal combining ability was remarkable  for days to 75% tasseling, plant and ear height, leaf area, ear diameter, ear length, number of rows ear-1, number of kernels row-1, 300- kernel weight and yield plant-1. The hybrid IK8xTH613 displayed the best value for yield plant-1 and IK58XTH613 for days to 75% tasseling, while the reciprocal HSxIK8 was the best for yield plant-1.

scholarly journals Combining ability studies for yield, associated traits and quality attributes in rice for South Gujarat (Oryza sativa L.)

2017 ◽  
Vol 9 (1) ◽  
pp. 60-67
Author(s):  
Navin Chander Gahtyari ◽  
P. I. Patel ◽  
Rakesh Choudhary ◽  
Sudhir Kumar ◽  
Naveen Kumar ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Grain Yield ◽  
Plant Height ◽  
Combining Ability ◽  
Amylose Content ◽  
Oryza Sativa L ◽  
Block Design ◽  
General Combining Ability ◽  
Specific Combining Ability ◽  
Kernel Length

Line x tester analysis using a set of four females, ten males and their forty hybrids was carried out to esti-mate the general combining ability of parents and specific combining ability of hybrids for yield and ten other associ-ated components in rice (Oryza sativa L.) in a Randomized Block Design during Kharif 2011. GCA variances for females (s2f) were significant at 0.1% level of significance for plant height (40.8), no. of grains per panicle (505.9), grain yield per plant (29.1), test weight(17.9), straw yield per plant (61.3) and kernel L/B ratio (0.2) whereas specific combining ability (SCA) variances for f x m interactions were highly significant for all the characters. Non-additive gene action was prevalent in all characters (Range: 0.03 in amylose content to 0.88 in kernel length breadth ratio) except plant height (1.33) as evident by low GCA to SCA ratio. None of the parents were good general combiner for all traits, however, female IR-28 and male AMT-119 and PNR-546 were good general combiners for a maximum number of traits i.e. five traits out of eleven.. The general combining ability for grain yield per plant for female parent Gurjari (6.19) and NVSR-178 (5.29); and male parents AMT 119 (2.73) and PNR 546 (2.44) makes them a good choice for improving yields in a hybridization programme as these female and male parents are also having signifi-cant GCA effects for maximum number of yield associated traits i.e. four and five traits out of eleven for female and male parents respectively. A vis-à-vis comparison of top three specific combining ability crosses with their mean performance showed correlation and these crosses were having at least one good general combining ability parent.

scholarly journals Analysis of Combining Ability in Rice Varieties for Quantitative Traits

2019 ◽  
Vol 11 (3) ◽  
pp. 436-439
Author(s):  
Ghaffar KIANI
Keyword(s):  
Grain Yield ◽  
Combining Ability ◽  
Agronomic Traits ◽  
Block Design ◽  
Rice Varieties ◽  
Gene Effects ◽  
Breeding Programs ◽  
Grain Length ◽  
Additive Gene Effects ◽  
Additive Gene

Rice is staple food in Iran. Despite of high quality of local rice, their grain yield is low. In hybridization breeding programs, selection of suitable parents is an essential role for developing new combinations with broadens genetic diversity. Combining ability of local rice varieties namely ‘Hashemi’, ‘Sang Jo’ and ‘Tarom Deylamani’ and ‘Nemat’ was evaluated in a partial diallele analysis for agronomic traits in a randomized complete block design at Sari Agricultural Sciences and Natural Resources University. General combining ability (GCA) and specific combining ability (SCA) variances showed predominated role of additive gene effects in the inheritance of grain length. Both additive and non-additive components of genetic variances were important in the inheritance of traits like grain yield, plant height, panicle length, total grains per panicle, grain length and grain length to width. However, non-additive gene effects were seen for tiller number. Results showed that ‘Nemat’ was the best general combiner for most of characters followed by ‘Tarom Deylamani’. The cross of ‘Hashemi’ × ‘Tarom Deylamani’ was suggested to exploitation of heterosis breeding for increasing yield and its components in rice breeding programs. 

scholarly journals COMBINING ABILITY IN RELATION TO HETEROSIS EFFECTS AND GENETIC DIVERSITY IN COTTON USING LINE X TESTER MATING DESIGN

2021 ◽  
Vol 21 (No.1) ◽  
Author(s):  
Max Mariz ◽  
Reham Gibely ◽  
Abdelmoghny AM
Keyword(s):  
Genetic Diversity ◽  
Combining Ability ◽  
Gene Action ◽  
Fiber Strength ◽  
Fiber Quality ◽  
Block Design ◽  
Specific Combining Ability ◽  
Lint Yield ◽  
Gene Effects ◽  
Additive Gene

The aim of this study was to investigate the relationship between specific combining ability, genetic diversity of parents and heterosis over better parent effects. This research, having eighteen F1 crosses derived from crossing between six lines and three testers, was conducted in order to estimate combining ability, to determine the nature of gene action and heterosis for yield and fiber quality traits and to detect the appropriate crosses for cotton breeding program. The experiment was conducted on randomized complete block design with three replications. The analyses of variance showed significant differences among the genotypes, parents (lines and testers) and crosses for all the studied traits. Estimates of both general and specific combining ability effects were significant for most traits, indicating the importance of both additive and non-additive gene effects for these traits. While, specific was higher than general combining ability variances, for all traits, showing non-additive gene action controlling and therefore, heterosis breeding may be rewarding. The heterosis value varied from cross to cross and from trait to trait. This dissimilarity coefficient was ranged from 3.234 between Giza 85 and Giza 80 to 71.002 between Giza 96 and 10229. Association between heterosis over better parent and specific combining ability was positive and significant for all the studied traits except lint yield / plant. No correlations were found between SCA and GD for all the studied traits. Similarly, heterosis effects was negatively significantly correlated with GD only in the case of boll weight, lint yield / plant and uniformity ratio %, while showed positive and significant correlation for fiber strength and micronaire value. Four crosses showed both positive and significant heterosis and specific combining ability for most yield traits. The parents of these crosses belong to different clusters. Crossing diverse parents could produce high heterotic performance in hybri

Combining ability for yield and yield attributing characters inrabi mungbean [Vigna radiata (L.) Wilczek.]

2016 ◽  
Vol 50 (6) ◽  
Author(s):  
G. B. Vaidya ◽  
D. A. Chauhan ◽  
B. H. Kale ◽  
A. B. Patil
Keyword(s):  
Combining Ability ◽  
General Combining Ability ◽  
Specific Combining Ability ◽  
Gene Effects ◽  
Yield Attributes ◽  
Additive Component ◽  
Breeding Programmes ◽  
Additive Gene ◽  
Pod Length ◽  
Number Of Branches

Seven genotypically diverse lines of mungbean were crossed in diallele fashion to identify genotypes with high general combining ability and specific cross combinations with high specific combining ability for yield and yield attributes in rabi season excluding reciprocals. The analysis for combining ability revealed significant mean sum of squares due to general and specific combining ability for all the characters studied indicating importance of both additive as well as non-additive gene effects involved in the expression of all the characters. Higher magnitude of general combining ability variances for most of the traits except for number of branches per plant, pod length, number of seeds per pod and harvest index pointed out the preponderance of additive component of the genetic variance in the expression of the characters under study. The good general combiners for yield attributing traits were Co-4, GBM-1 and Meha and the best specific cross combinations having the highest SCA effect for yield and yield attributing traits were Co-4 x Meha, Co-4 x GBM-1, Rm-9-126 x Rm-9- 134, GBM-1 x Meha and Rm-9-133 x GBM-1. This cross combinations could be utilized for further breeding programmes for the development of rabi mungbean varieties with chilling tolerant ability or photo-thermo insensitivity, so as to exploit potential of rabi mungbean in rice fallows of heavy rainfall zone.

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

2017 ◽  
Author(s):  
Anamika Nath ◽  
S. R. Maloo ◽  
Baudh Bharti ◽  
R. B. Dubey ◽  
Rajani Verma
Keyword(s):  
Seed Yield ◽  
Combining Ability ◽  
Gene Action ◽  
General Combining Ability ◽  
Specific Combining Ability ◽  
Mean Square ◽  
Additive Gene Action ◽  
Gene Effects ◽  
Combining Ability Analysis ◽  
Additive Gene

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.

Combining ability and Heterosis analysis for grain yield and yield associated traits in Pea (Pisum sativum L.)

2018 ◽  
Author(s):  
Nageshwar . ◽  
Bijendra Kumar ◽  
Hariom Suman ◽  
A. H. Madakemohekar ◽  
Dattesh Tamatam
Keyword(s):  
Pisum Sativum ◽  
Grain Yield ◽  
Combining Ability ◽  
Block Design ◽  
General Combining Ability ◽  
Specific Combining Ability ◽  
Combining Abilities ◽  
Pisum Sativum L ◽  
Randomized Block Design

This experiment was conducted to determine the general and specific combining abilities and heterosis for grain yield and yield associated traits in pea as a source of protein through line x tester analysis. Grain yield and its inheritance were carried out for investigation through a 12 x 3 line x tester analysis. Experimental materials comprising 15 parents and their 36 hybrids. The materials were planted in a randomized block design with three replications. The general combining ability and Specific combining ability effects were significant indicating the presence of both additive and non-additive types of gene actions. Heterosis was determined as the superiority over mid parent heterosis as well as better parent (HBP). Grain yield showed highly significant heterosis ranging from -36.29 to 8.77and relative heterosis ranged from -25.85 to 13.19 respectively.

Heterosis, inbreeding depression and combining abilities in a five-parent diallel of six-row barley

1976 ◽  
Vol 86 (3) ◽  
pp. 537-542 ◽  
Author(s):  
H. G. Nasr ◽  
W. Khayrallah
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Inbreeding Depression ◽  
Combining Ability ◽  
Diallel Cross ◽  
General Combining Ability ◽  
Kernel Weight ◽  
Specific Combining Ability ◽  
Combining Abilities ◽  
Good Yielding

SummaryThe F1 and F2 generations of a diallel cross of six-row barley involving the parents, Beecher, Athenais, Atlas 46, 3130-4564-3, and 3130-864-4 were studied and heterosis, inbreeding depression, and combining abilities were measured for grain yield, number of tillers per plant, number of kernels per plant, kernel weight, and plant height. Significant heterosis was detected for grain yield in two of the ten crosses, for number of tillers per plant in one cross, for number of kernels per plant in two crosses, for plant height in three crosses, and for kernel weight in none of the crosses. The inbreeding depression of the F2 generation was present in most cases but significantly so in a few. Atlas 46 x 3130-4564-3 exhibited inbreeding depression for grain yield, number of kernels per plant, and plant height.The general combining ability (GCA) mean squares of both generations were significant for all characters studied except number of kernels per plant in the F1 generation. The specific combining ability (SCA) mean squares were significant for only plant height in the F1 generation and all characters studied except number of tillers per plant in the F2 generation.The GCA effects indicated that Beecher and Athenais are good general combiners for grain yield and its components. The latter parent produced good yielding hybrids with slightly shorter plants than the remaining hybrids.The SCA effects revealed that Athenais × 3130-4564-3, Athenais × 3130-864-4, and Beecher × Atlas 46 seem good specific combinations for high grain yield. Also, the former two crosses tend to produce shorter plants.

scholarly journals Diallel Analysis for Area, Chlorophyll and Temperature of Flag Leaf in Bread Wheat under Well Watered and Drought Stress Conditions

2021 ◽  
Vol 13 (10) ◽  
pp. 45
Author(s):  
Naheif E. Mohamed ◽  
Ismail M. Bedawy ◽  
Yasser A. M. Hefny
Keyword(s):  
Drought Stress ◽  
Bread Wheat ◽  
Flag Leaf ◽  
Block Design ◽  
Diallel Analysis ◽  
Stress Conditions ◽  
F1 Hybrids ◽  
Gene Effects ◽  
Genetic Components ◽  
Additive Gene

To study genetic analysis of some physiological traits of drought stress in wheat using diallel techniques, an experiment was performed on ten bread wheat genotypes as parents and their 45 F1 hybrids in a randomized complete block design with three replicates under well-watered and drought stress conditions at the Research Farm of Faculty of Agriculture, Sohag University, Egypt during season of 2018/19. The results showed significant differences between the genotypes (G), Parents (P), F1 crosses, P vs. F1, GCA and SCA under well-watered and drought stress in the flag leaf area (FLA), flag leaf chlorophyll content (FLCC) and flag leaf temperature (FLT), except FLCC for F1 crosses exhibited insignificant differences. The significant differences were found in the interaction of SCA × Env., in all studied traits and GCA × Env., for FLT., indicating the involvement of both additive and dominance gene action in their inheritance. The most desirable heterotic effects were considered as the largest positive heterosis estimates for FLA and FLCC, and the lowest negative for FLT. The parent numbers P9, P8 and P3 were the best general combiner for FLA under normal irrigation and drought stress. While the parents P2, P7 and P9 were the best general combiner for FLCC, under normal irrigation and (P1, P2 and P3) under drought stress. Therefor the parents P1, P4 and P5 were the best general combiner for FLT under normal irrigation, also the P3, P4 and P5 were the best general combiner for FLT under drought stress conditions. Under normal irrigation and drought stress conditions as well as the combined data, the additive genetic components of variation (VA) in F1 ’s was much greater than dominance component (VD), as expressed by the (VA/VD) ratio which was more than unity for the FLA, and FLT under normal irrigation and their combined. This indicates that the additive gene effects in F1 crosses are more important than dominance and plays the major role in the inheritance of these studied traits.

Sign in / Sign up

Export Citation Format

Share Document