A STUDY OF HETEROSIS IN BRINJAL (SOLANUM-MELONGENA-L)
MYSORE JOURNAL OF AGRICULTURAL SCIENCES(1979)
摘要
Brinjal or eggplant is a crop to which a considerable amount of hybrid vigour can be attributed. The inheritance of some qualitative characters in brinjal is simple and governed by a few genes only (Thakur et al., 1969), while several quantitative characters are polygenically inherited which are greatly influenced by the environment and hence a phenotype is often not a true indicator of its genotype. Hybridization is the most potent technique for breaking yield barriers and evolving varieties having built-in high yield potentials. The improvements made so for represents only a small portion of the possible improvements and there is considerable scope for further modifying the crop species. The ten diverse genotypes of brinjal viz., Punjab Barsati, Punjab Sadabahar, IVBL-9, DBL-24, JB-7, JB8, Nessppe, Uttara, Small Long White and Green Long Cluster were subjected to the diallel system of mating excluding reciprocals and total of 45 F1’s were derived. The crosses were made using the conventional method of hand emasculation and pollination. Experimental material consisting of ten lines and 45 F1s, generations were raised in a randomized block design (RBD) with three replications in the year 2003 (kharif season), row to row and plant to plant spacing were kept at 60 cm and 60 cm respectively. The NPK were given at the rate of 100:50:50 kg per hectare respectively during the experimental trial. Half of the nitrogen and full doses of phosphorus and potash were applied at the time of transplanting and remaining half of the nitrogen as top dressing after 45 and 75 days of transplanting. The observations on plant height, days to first flowering, days to first harvesting, number of branches per plant, number of fruits per cluster, average fruit length, average fruit diameter, number of fruits per plant, average fruit weight and total fruit yield per plant were recorded.
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