Abstract
The decline in rice production experienced by ethnic minority (Pa-gha-ker-yor) farmers
at Pala-U village, Prachuap Khiri Khan Province, Thailand, has multiple causes. The
effect, however, is threatening the sustainability and well-being of the local
populations. The objective of this study is to determine the relative yield and yield
components of upland rice varieties collected from these farmers, both inside and
outside of forested areas. Such information is then used to help determine the most
promising breed varieties for future cultivation. Correlation and path coefficient
analysis were conducted for yield, yield components, and related characteristics in
seven genotypes of upland rice. The research was conducted during planting seasons in
2015 and 2016 in Prachuap Khiri Khan and Phetchaburi provinces, Thailand,
respectively. Results show a significant positive correlation between grain yield hill-1
and seed number panicle-1. Though non-significant, positive correlations were found
between grain yield and four other criteria: panicle length, tiller number hill-1, plant
height, and seed weight panicle-1. In 2015 and 2016, as for path analysis, grain yield
hill-1 was directly influenced by factors either showed high positive effect such as: seed
number panicle-1, panicle length, plant height and percent of grain filling, or high
negative effect as 100 seed weight. Seed number panicle-1, percent of grain filling, seed
weight panicle-1, and plant height were shown to have an indirect effect on grain yield
hill-1. However, grain yield hill-1 was negative indirectly influenced through other
characteristics by percent of grain filling. As such, seed number panicle-1, panicle
length, and plant height demonstrated the greatest influence on yield may be considered
as primary criteria, with percent of grain filling and seed weight panicle-1 qualifying as
secondary criteria for high yield selection
Pantipa Na, Monnat Yamying, Sivalai Thammach, Warisara Phuth, Siraprapa Brooks. (2019) Correlation and path analysis studies of upland rice (Oryza sativa L.) collected from Pala-U village, Prachuap Khiri Khan, Thailand, Asian Journal of Agriculture and Biology, Volume 7, Issue 2.
-
Views
959 -
Downloads
131
Article Details
Volume
Issue
Type
Language
