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Journal of Pharmacognosy and Phytochemistry

Journal of Pharmacognosy and Phytochemistry

Vol. 10, Issue 1 (2021)

Genetic variability and path coefficient analysis studies in forage maize genotypes (Zea mays L.)

Author(s):

SD Rathod, GC Shinde and SD Shinde

Abstract:
In present investigation fifty four genotypes of maize were evaluated at research farm of AICRP on Forage Crops and Utilization, Mahatma Phule Krishi Vidyapeeth, Rahuri during rabi 2018-19 in a Randomized Block Design with two replications. The observations were recorded on yield and yield contributing traits viz., days to 50% tasseling, days to silking, plant height (cm), number of leaves/tiller, number of internodes/tiller, leaf length (cm), leaf breadth (cm), L/S ratio, stem girth (cm), green forage yield (kg/plant), dry matter percentage and crude protein percentage. The analysis of data revealed the significant difference among the genotypes for all the characters. Phenotypic coefficient of variation estimates was slightly higher than genotypic coefficient of variation. High estimates of heritability (b.s.) was observed for all the characters studied except leaf/stem ratio. The traits green forage yield, plant height, number of internodes per plant, stem girth, leaf length, leaf width and number of leaves per plant showed high heritability estimates accompanied with high genetic advance percent of mean and high estimates of heritability coupled with moderate genetic advance percent of mean were observed for the characters viz., days to 50% tasseling, days to 50% silking, L/S ratio, dry matter percentages and crude protein percentages. The characters viz., days to 50% tasseling, days to 50% silking, plant height, stem girth, leaf length, leaf width, number of leaves per plant, number of internodes per plant, dry matter per cent and crude protein per cent showed significant positive correlation with green forage yield both at phenotypic and genotypic levels. The trait L/S ratio recorded significant negative correlation with green forage yield at only phenotypic level. L/S ratio recorded non-significant negative correlation with green forage yield only at genotypic level. Plant height, leaf length, leaf width and dry matter per cent recorded high magnitudes of direct effects accompanied by highly significant correlation with green forage yield at genotypic level, indicating true and perfect relationship between them. Thus suggesting that selection for these traits viz., plant height, leaf length and dry matter per cent will be highly rewarding for improving the green forage yield.

Pages: 2764-2768  |  662 Views  246 Downloads


Journal of Pharmacognosy and Phytochemistry Journal of Pharmacognosy and Phytochemistry
How to cite this article:
SD Rathod, GC Shinde and SD Shinde. Genetic variability and path coefficient analysis studies in forage maize genotypes (Zea mays L.). J Pharmacogn Phytochem 2021;10(1):2764-2768.

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