Superiority of local eggplant hybrids for quantity traits
Abd El-Rahim, Aida M. M.
Superiority of local eggplant hybrids for quantity traits [electronic resource]. تفوق الهجن المحلية للباذنجان في الصفات الكمية. - p.3413-3423.
Includes references.
This work was carried out during summer season for two years from 2003-2004 at a private farm located at Orman district, Talka , Dakahlia Governorate, Egypt to produce some local long black eggplant hybrids which show high productivity and high quality to meet the desires of consumer and farmer. On 20 March 2003 half diallel set crosses were made between four parental lines of long black eggplant cultivars namely 56 , 59 , 513 and 516 giving 6F1 crosses. In 2004 the four parents and 6 F1,S were evaluated during the summer season at the same private farm under drip irrigation system. The obtained results indicated that heterosis over the better parent gave positive values in most crosses for plant height, early yield per plant, number of fruits per plant, total yield per plant and total yield per plot and all F, hybrids gave negative values of heterosis for number of days to 25% flowering where the negative values indicate that the six crosses were earlier than the better parent to each cross. Concerning general combining ability , it was found that 516 was the best combiner for number of branches, number of days to 25% flowering (earliness) , early yield per plant, number of fruits per plant, total yield per plant and total yield per plot, followed by 56 parental line. Concerning specific combining ability , 5eX516 hybrids was found to be the best cross for number of fruits per plant, total yield per plant and total yield per plot, followed by 5eX513 , 5eX59 and 59x516 hybrids which gave positive values of sca for total yield per plot. Additive gene effects appeared to be more important than non additive gene effects as reflected on the high estimated of gca variances relative to those of sca variances for each of number of branches per plant and number of days to 25% of floweri!1g . While it was found that non additive gene effects appeared to play important roles than additive effects for plant height, early yield per plant, number of fruits per plant, fruit weight, total yield per plant, fruit length , fruit diameter, fruit shape index and total yield per plot. Positive correlation was found between total yield per plot and each of plant height, number of branches per plant, early yield per plant,number of fruits per plant, fruit weight, total yield per plant, fruit length and fruit diameter. On the other hand, number of days to 25% flowering and fruit shape index reflected negative correlations. Finally. it can be concluded that the hybrids 56X516 , 5eX513 , 5eX59 and 5gX516 had a good specific combination for total yield per plot and fruit quality of local long black eggplant hybrids.
Summary in Arabic.
Eggplant--Genetics.
Eggplant--Varieties.
Superiority of local eggplant hybrids for quantity traits [electronic resource]. تفوق الهجن المحلية للباذنجان في الصفات الكمية. - p.3413-3423.
Includes references.
This work was carried out during summer season for two years from 2003-2004 at a private farm located at Orman district, Talka , Dakahlia Governorate, Egypt to produce some local long black eggplant hybrids which show high productivity and high quality to meet the desires of consumer and farmer. On 20 March 2003 half diallel set crosses were made between four parental lines of long black eggplant cultivars namely 56 , 59 , 513 and 516 giving 6F1 crosses. In 2004 the four parents and 6 F1,S were evaluated during the summer season at the same private farm under drip irrigation system. The obtained results indicated that heterosis over the better parent gave positive values in most crosses for plant height, early yield per plant, number of fruits per plant, total yield per plant and total yield per plot and all F, hybrids gave negative values of heterosis for number of days to 25% flowering where the negative values indicate that the six crosses were earlier than the better parent to each cross. Concerning general combining ability , it was found that 516 was the best combiner for number of branches, number of days to 25% flowering (earliness) , early yield per plant, number of fruits per plant, total yield per plant and total yield per plot, followed by 56 parental line. Concerning specific combining ability , 5eX516 hybrids was found to be the best cross for number of fruits per plant, total yield per plant and total yield per plot, followed by 5eX513 , 5eX59 and 59x516 hybrids which gave positive values of sca for total yield per plot. Additive gene effects appeared to be more important than non additive gene effects as reflected on the high estimated of gca variances relative to those of sca variances for each of number of branches per plant and number of days to 25% of floweri!1g . While it was found that non additive gene effects appeared to play important roles than additive effects for plant height, early yield per plant, number of fruits per plant, fruit weight, total yield per plant, fruit length , fruit diameter, fruit shape index and total yield per plot. Positive correlation was found between total yield per plot and each of plant height, number of branches per plant, early yield per plant,number of fruits per plant, fruit weight, total yield per plant, fruit length and fruit diameter. On the other hand, number of days to 25% flowering and fruit shape index reflected negative correlations. Finally. it can be concluded that the hybrids 56X516 , 5eX513 , 5eX59 and 5gX516 had a good specific combination for total yield per plot and fruit quality of local long black eggplant hybrids.
Summary in Arabic.
Eggplant--Genetics.
Eggplant--Varieties.