Interfamily variability studies in green long pre-breeding lines of brinjal (Solanum melongena L.)

Abstract

An investigation was carried out with ten pre-breeding lines of F4 generation of green long brinjal derived from the cross Green Long x IIHR-3 to study the interfamily variability for nine different growth and yield parameters. High PCV and GCV estimates was found only for average fruit weight in interfamily variability studies indicating there is lack of high variability between the average performance of segregating lines for these characters. Low PCV and GCV were recorded for plant height, days to 50 percent flowering, fruit length and fruit breadth. Moderate PCV and GCV was noticed for number of branches per plant, days to first flowering, number of fruits per plant and yield per plant. But the narrow difference between PCV and GCV indicated low environment effect. High heritability coupled with high GA and GAM was observed for yield per plant indicates predominant role of additive gene action. Whereas high heritability with high GAM was recorded for other traits like average fruit weight and number of fruits per plant. Estimation of percent bacterial wilt incidence in each family revealed that five lines viz., 12-36-170-11, 12-36-46-3, 12-36-170-9, 12-36-170-19 and 12-36-46-6 were found to be resistant.