21 Kas 2024 Perşembe
Evaluation of oak tasar silkworm hybrids in different seasons for improvement in productivity
Abstract :The rearing performance of sixteen hybrid combinations
were evaluated to find out the superior hybrids. Rearing of the F1
hybrid progenies was conducted as per standard procedures during spring and
summer crop in the years 2017 and 2018.The data generated in respect
of eight economically important traits during spring and summer seasons of two
years was recorded replication wise and pooled. The data was analyzed
statistically and subjected to multiple trait evaluation index by following
Mano’s evaluation index method. The breeds were ranked as per the cumulative
score and the value of a particular trait in a particular breed was compared
with the ranking. Seven hybrid combinations scored higher E.I. values greater
than 50, out of which C27 × RPP and RPP × C27 displayed
significantly superior performance in all the traits under study during both
spring and summer seasons. The highest
average cumulative evaluation index score of 70.11 was recorded in C27
× RPP hybrid. The superior hybrids may be considered for large scale trials for
assessing their commercial exploitability under specified environmental
conditions in the valley regions of Manipur.
Oak tasar, silkworm, Antheraea proylei, hybrid,
evaluation index