ADAPTABILITY AND PATH ANALYSIS IN BERSEEM (Trifolium alexandrinum L.)
Loading...
Files
Date
1997
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Mahatma Phule Krishi Vidaypeeth, Rahuri
Abstract
Investigations were conducted for critical
assessment of adaptability, associations and path effects in
berseem. Twenty genotypes including two check varieties
(Wardan and Mescavi) were evaluated at Rahuri, Maharashtra in
three predictable environments (E^, E2» E3) during Rabi.1994-
95 and three cuts were taken in each environment.
Plant height, number of tillers per plant and per
meter length, L/S ratio, green and dry fodder yield per
plant, crude protein content and green fodder yield per meter
distance were studied. Significant G x E interactions were
observed for all the characters studied in all the
environments. Importance of linear component of G x E
interaction was observed in the expression of plant height (in E^, E2 and over all environments), number of tillers per
plant (in E^), number of tillers per meter length (in E2» E3
and over all environments), green fodder yield (in E^, E2 and
over all environments), dry fodder yield per plant (in all
environments) and green fodder yield per meter distance (in
Ej, E3 and over all environments). Pooled deviation (nonlinear)
effects were highly significant for all the
characters except number of tillers per plant in E ^
environment.
The genotypes viz., JHB-93-3 (plant height), JHB-
92-2 (number of tillers/plant, crude protein content), JHB-
93-4, HFB-135, Wardan and Mescavi (number of tillers/plant)
had wider adability in nine environments (i.e. over all
environments). Further, the genotypes viz., JHB-92-2, HFB-
135, Mescavi in all the three predictable environments (E^, E£
and E^)^txe stable for most of the characters including green
and dry fodder yield per plant.
The genotypes, BL-126 for number of tillers per
plant, Mescavi for L/S ratio, BL-122 and JHB-93-2 for green
fodder yield per plant in E2 environment, While, the
genotype BL-126 for number of tillers per meter distance,
JHB-93-4 for green and dry fodder yield per plant and protein
content and Wardan for dry fodder yield and crude protein
content in E3 environment appeared adapted to rich environment (i.e. with below average stability). Whereas,
the genotypes,BL-130 for green forage yield and BL-102 for L/S
ratio in E2 and E3 environments, respectively were adaptated
to poor environment having above average stability.
The correlation studies indicated the importance
of all the characters except L/S ratio as they were
significantly associated with green fodder yield per meter
distance in all the three predictable environments. However,
considering direct and indirect effects under various
environments, the components such as plant height, crude
protein content, number of tillers per plant and green fodder
yield per plant appeared most important in the selection
criteria aiming at improvement \r\ fodder yield of berseem.
Description
Keywords
null