YIELD STABILITY OF NEW HYBRID RICE ACROSS LOCATIONS
Abstract: The adaptation of
hybrid rice varieties mostly are in specific location and season, but there are
some of the varieties have a wide adaptation then adopted by the farmer in the
large area. Replicated yield trials were conducted to study the stability of
hybrid rice yield and identify the best location to optimize their yield per
ha. We have conducted the trials in three location such as Sukamandi, Salatiga
and Malang during two seasons in 2011. We are analyzing data across location
and season using AMMI and Eberhart
Russel methods. The AMMI analysis showed that the IR79156A/PK88 was adaptable to favorable
environments but unstable. This hybrid is always performing well and produce
the higher yield compare to check variety. Some of other hybrids were good only in specific location, i.e.
IR62829A/BP2280-1E-12-22 and IR58029A/BP2 280-1E-12-22. Those hybrids produced
higher yield in Salatiga and Malang, respectively. Seem to AMMI analysis, the
result of Eberhart and Russells method also showed that IR79156A/PK81 was the best hybrid with regression slope (b)
around 1 with the yield average higher than average of all hybrids. It
indicated that this hybrid has a wide adaptation and probably can be cultivated
in the wider ecosystem.
Author: Satoto, Indrastuti
Apri Rumanti, Yuni Widyastuti
Journal Code: jppertaniangg160017
