Agronomic characteristics of four rice varieties and their relationship with yield performance
2008
Geffry Ujie J. | Rosnita I. | Nancy M. | Hollena N. | Siti Azizah S.
The type of rice varieties grown is a major determinant of their productivity. Each variety possesses certain agronomic characteristics which are closely related to their yielding ability. This study assessed variations in agronomic characteristics among four rice varieties; namely Biris, Saratani, MR 84 and MR 219 and their relationship with yield performance. Four varieties of rice were grown in four replicates in Kota Samarahan, Sarawak from September 2006 to March 2007. Significant differences among the varieties were observed in the leaf and flag leaf area, leaf to stem ratio, production of grains per panicle and square meter, grain filling, grain weight and straw yield. Correlation study showed that parameters that determine the rice yield performance are leaf and flag leaf area, production of grains per panicle, production of panicles per square meter and production of grains per square meter. The results imply that information on relationship between agronomic characteristics and yield can support rice breeders in improving defects in certain plant traits and developing new high yielding rice varieties with the aid of modern breeding techniques through genetic manipulation.
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