scholarly journals Genetic analysis of yield and yield related traits in sunflower (Helianthus annuus L.) under well-watered and water-stressed conditions

Genetika ◽  
2014 ◽  
Vol 46 (2) ◽  
pp. 369-384 ◽  
Author(s):  
Reza Darvishzadeh ◽  
Hatami Maleki ◽  
Alireza Pirzad ◽  
Maryam Kholghi ◽  
Abdollahi Mandoulakani
Keyword(s):  
Drought Stress ◽  
Genetic Analysis ◽  
Helianthus Annuus ◽  
Seed Yield ◽  
Combining Ability ◽  
Block Design ◽  
Stressed Condition ◽  
Head Diameter ◽  
Helianthus Annuus L ◽  
The Cross

Drought stress is one of the factors which influence sunflower (Helianthus annuus L.) production. Breeding for tolerance to drought stress has become a major focus. In the present investigation, combining ability, gene action and genetic analysis of several characteristics were studied in six pure lines of sunflower and their 15 hybrids. The materials were evaluated in two separate experiments using a randomized complete block design (RCBD) with three replications in two states (well-watered and water-stressed) under controlled conditions. Comparison of mean values exhibited that under water- stressed condition the average performance of sunflower genotypes were decreased for all studied traits. In well-watered condition the highest value for seed yield per plant (SY) was observed in the cross 'LR4?LR25', whereas in water-stressed condition the highest value for this trait was observed in the hybrid 'C104?LR25'. Combining ability analysis revealed that most of agronomical traits such as head diameter, number of achene per head, head weight and seed yield inherited differently in stressed and non-stressed conditions. In water-stressed conditions, the non-additive effects played a more important role for controlling the number of achene per head (NA), seed yield per plant (SY), head diameter (HD), and days from flowering to physiological maturity (DFM) than additive. Based on results yield improvement for water-stressed conditions requires selection under drought conditions. In well-watered condition, the cross 'LR4?C10' showed the best SCA value for seed yield per plant (SY). In water-stressed conditions, 'RHA266?C100' had the highest SCA for seed yield per plant (SY) and number of achene (NA) per head.

scholarly journals Genetic Analysis of Various Traits in Oilseed Brassicas

2021 ◽  
Author(s):  
Hafiz Basheer Ahmad ◽  
Salsabeel Rauf ◽  
Waqas Shafqat Chattha ◽  
Abdul Khaliq ◽  
Amir Amin ◽  
...  
Keyword(s):  
Genetic Analysis ◽  
Interspecific Hybridization ◽  
Seed Yield ◽  
Combining Ability ◽  
Block Design ◽  
Brassica Species ◽  
Interspecific Crosses ◽  
Novel Traits ◽  
Randomized Complete Block Design ◽  
Oilseed Brassicas

Background: The combining ability and manifestation of heterosis within and among the species of oilseed brassicas (B. campestris, B. napus and B. juncea) were studied for yield and yield related traits in 12F1 combinations. Methods: All crosses (12F1) along with their parents (7 parents) were sown in randomized complete block design (RCBD) with three replications. Result: The analysis of variance showed extensive variability among the genotypes. The physical appearance of interspecific crosses was intermediate. B. campestris showed significant GCA effects among lines and B. juncea among testers for seed yield per plant. General combining behaviour of B. campestris was better as compared to B. napus and B. juncea. The SCA effects were higher within species than among the species. This also revealed that within the species B. juncea had more SCA (17.45) than B. napus (9.82) and B. campestris (8.01) for seed yield. The SCA showed the improvement of B. Juncea, is the best than other two species. It is also concluded that to obtain better yield, crossing within the species is more appropriate than among the species. Moreover, to introduce novel traits in brassica species is possible through interspecific hybridization.

scholarly journals Combining ability for seed yield, its components and oil content in sunflower (Helianthus annuus L.)

2017 ◽  
Vol 8 (1) ◽  
pp. 96
Author(s):  
A.U. Ingle ◽  
S.S. Nichal ◽  
V.L. Gawande ◽  
E.R. Vaidya ◽  
B.S. Kharat
Keyword(s):  
Helianthus Annuus ◽  
Seed Yield ◽  
Combining Ability ◽  
Oil Content ◽  
Helianthus Annuus L

Combining ability through line × tester analysis for phenological, seed yield, and oil traits in sunflower (Helianthus annuus L.)

Euphytica ◽  
2015 ◽  
Vol 204 (1) ◽  
pp. 199-209 ◽  
Author(s):  
Shahnaz Memon ◽  
Muhammad Jurial Baloch ◽  
Gul Muhammad Baloch ◽  
Wajid Ali Jatoi
Keyword(s):  
Helianthus Annuus ◽  
Seed Yield ◽  
Combining Ability ◽  
Helianthus Annuus L

scholarly journals STUDYING OF COMBINING ABILITY OF SUNFLOWER (HELIANTHUS ANNUUS L.) BY A HEAD SQUARE AND SEEDS YIELD IN TESTER CROSSES

2021 ◽  
Author(s):  
S.А. Guseva ◽  
◽  
D.D. Babushkin ◽  
◽  
Keyword(s):  
Helianthus Annuus ◽  
Seed Yield ◽  
Combining Ability ◽  
Specific Combining Ability ◽  
Helianthus Annuus L ◽  
Combining Abilities

We analyzed a calculation of combining ability (CA) of 21 sunflower genotypes of Russian and foreign breeding by seed yield and head square, determined in a scheme of top-cross. Also there is considered a relation of mean squires of variability of common and specific combining abilities with a purpose to determine prevailing effects of gens. We revealed the sunflower variety samples with high meanings of effects of common combining ability and dispersion of specific combining ability as well as hybrid combinations F1 with high effects of specific combining ability.

Combining ability and heterosis studies across environments in linseed (Linum usitatissimum L.)

2011 ◽  
Vol 59 (1) ◽  
pp. 87-102 ◽  
Author(s):  
S. Sood ◽  
N. Kalia ◽  
S. Bhateria
Keyword(s):  
Seed Yield ◽  
Linum Usitatissimum ◽  
Combining Ability ◽  
Yield Components ◽  
Block Design ◽  
Linum Usitatissimum L ◽  
Randomized Block Design ◽  
Component Traits ◽  
Parental Lines ◽  
Fibre Yield

Combining ability and heterosis were calculated for fourteen lines of linseed in a line × tester mating design using twelve lines and two diverse testers in two different environments. The hybrids and parental lines were raised in a completely randomized block design with three replications to investigate seed and fibre yield and their component traits. Genetic variation was significant for most of the traits over environments. Combining ability studies revealed that the lines KL-221 and LCK-9826 were good general combiners for seed yield and most of its components, whereas LMH-62 and LC-2323 were good general combiners for yield components only. Moreover, KL-221 was also a good general combiner for fibre yield. Similarly, B-509 and Ariane were good general combiners for fibre yield and most of its components. Among the specific cross combinations, B-509 × Flak-1 was outstanding for seed yield per plant and B-509 × KL-187 and LC-2323 × LCK-9826 for fibre yield per plant, with high SCA effects. In general, the hybrids excelled their respective parents and the standard checks for most of the characters studied. Based on the comparison of mean performance, SCA effects and the extent of heterosis, the hybrids LC-2323 × LCK-9826 and B-509 × KL-221 appeared to be the most promising for both seed and fibre yield. Other promising combinations were LC-2323 × KL-210 and B-509 × Ariane for seed and fibre yield, respectively. The superiority of LC-2323, LCK-9826, KL-221, B-509 and Ariane as good general combiners was further confirmed by the involvement of these parents in the desirable cross combinations.

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