039618 PALKAR S H, CHARJAN S U, PATIL S R, CHAVAN V T, CHAVAN P B (Agriculture Coll, Nagpur) : Genetic divergence studies in maize (Zea mays L.) accessions. J Soil Crop 2020, 29(2), 319-28.
Eighty eight genotypes of maize (Zea mays L.) were evaluated for genetic divergence to identify potential parents for hybridization programme in kharif 2018 at College ofAgriculture, Nagpur. Mahalanobis D2 statistics for nine characters viz., days to 50% tasseling, days to 50% silking, days to maturity, plant height, cob length, cob girth, number of grainscob-1, 100 grain weight and grain yield plant-1 were used in this study for computing genetic divergence. The eighty eight genotypes were grouped into twenty clusters by usingTocher’smethod. The maximum inter-cluster distance was recorded between cluster IV and clusterXX (D = 28.41) whereas, minimum inter-cluster distance was found between cluster VI and cluster VIII (D = 1.82). The canonical analysis and cluster means study revealed the importanceof days to 50% tasseling, number of grains cob-1, plant height, grain yield plant-1 and coblength were considered as criteria for selecting potential parents for hybridization programme and according to this criteria 28 genotypes viz., 52202, 52623, 52025, 52201, 52014, 52291,52087, 52115, 52196, 52020, 52140, 52327, 52285, 52180, 52497, 52552, 52347, 52045, 52597,52353, 52095, 52081, 52065, 52219, 52263, 52250, 52603 and 52040 were identified to be used as parents for hybridization programme, which were suggested to be crossed in diallel fashion to obtain superior cross combinations. PKVM-Shatak as it is in separate cluster anddistant from other clusters can be further improved to produce new hybrid by crossing with parents 52250, 52020, 52087, 52025, 52014, 52040, 52623, 52201, 52180, 52552, 52115 and52202.
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