ASSESSMENT OF AMARANTH (Amaranthus spp.) GENOTYPES FOR GREEN AND GRAIN YIELD AND NUTRITIONAL STUDIES
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Date
2018-06
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University of Horticultural Sciences , Bagalkot
Abstract
Forty four amaranth genotypes were evaluated for genetic variability and
correlation during kharif and rabi seasons of 2015 - 16 in RBD with two replications.
The study was conducted at College of Horticulture, Bagalkot. Analysis of variance
revealed highly significant (at P=0.01) difference among the genotypes for all growth,
leaf yield and grain yield characters for both seasons. Broad genetic base was evident as
the values of genotypic and phenotypic coefficient of variation were high for leaf yield,
stem yield and total yield at each clipping as well as grain yield traits such as panicle
length, number of panicles per inflorescence, number of inflorescence per plant and
number of branches per plant during both seasons.
High heritability coupled with high genetic advance over mean was observed for
plant height, stem diameter, leaf length and breadth, leaf: stem ratio, stem dry matter,
leaf and stem yield as well as grain yield traits like plant height, stem diameter, number
of branches per plant, number of inflorescence per plant, number of panicles per
inflorescence, panicle length and breadth, thousand seed weight, seed protein and seed
yield indicating predominance of additive gene action for these traits. Correlation
studies revealed significant and positive association of total yield per plant with total
stem weight per plant and total leaf weight per plant at both kharif and rabi season.
Grain yield has significant and positive association with panicle breadth and panicle
length during both kharif and rabi seasons.
Based on the performance, five top genotypes each, for leaf yield and grain yield
were identified and these were further tested with five levels of nitrogen during kharif
season of 2016, in factorial RBD with two replications. The results of the study showed
that, highest leaf growth and yield can be obtained with higher N application of 150 kg
ha-1
. Among the varieties Arka Arunima recorded highest yield per plant, whereas CO 3
maintained high level of yield up to fifth clipping. Among the combinations, CO 3 with
150 kg N ha-1 has registered the highest total leaf yield per plant.
With regard to the seed yield, application of N3 (125 Kg N ha-1) recorded
highest seed yield and it was on par with N4 (150 Kg N ha-1) and N2 (100 Kg N ha-1).
Among the genotypes, AG - 303 was significantly superior for seed yield per plant.
However, combined effect of genotypes and nitrogen did not show any significant
influence on different growth, seed yield and seed quality parameters except length of
panicles and leaf length.
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