Galur Harapan Padi Rawa Toleran Rendaman

Rini Hermanasari, Supartopo Supartopo, Aris Hairmansis, Yullianida Yullianida, Bambang Kustianto

Abstract


The availability of high yielding rice varieties tolerant to water submergence at swamp lowland are limited. The study was aimed to determine tolerances of 6 promising lines of swampy rice to submergence. The experiment was conducted in a greenhouse of the Muara Experiment Station, Bogor, West Java, arranged in a factorial randomized complete block design with four replications. The first factor consisted of 6 promising swampy rice lines and 4 check rice varieties (IR64-Sub1, Swarna-Sub1, IR42, and Batanghari). The second factors consisted of three periods of rice seedlings submergence, i.e., at 6 days (R1), 10 days (R2), and 14 days (R3). The experiment was carried out in accordance with the standard methods. Results of the experiment indicated that the lines tested showed different responses to the submergence, for all observed variables (plant height before submergence, plant height after submergence, and the number of survive plants). Effects of submergences and interaction between submergences and rice genotypes was significant for the number of survive plants. Lines IR40931-1- 3-2 were tolerant to the 6 day submergence and could be considered to be developed into high yielding rice varieties tolerant to submergence as a backup or alternative varieties to IR64-Sub1.


Keywords


Rice promising lines; swampy rice; submergence tolerance

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DOI: http://dx.doi.org/10.21082/jpptp.v30n2.2011.p71-75

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