Stress-resistance of weedy rice Luolijing (Oryza sativa)
Yu, L.; Mortimer, A.Martin.; Xuan, S.; Lu, Y.; Zhou, Y.
Ying Yong Sheng Tai Xue Bao 16(4): 717-720
2005
ISSN/ISBN: 1001-9332 PMID: 16011174 Document Number: 593232
Weedy rice Luolijing (Oryza sativa) is generated in Dandong, Liaoning Province of Northeast China. Its plant height is taller than normal planted rice varieties, and its caryopsis is medium or long in size, which dropped easily after matured. The color of the caryopsis shell is straw-like or yellow alternated with black-gray. The spikelet is with or without awns, and the length of the awns is 2 similar to 12 cm. The 1000 caryopsis weight is 23.5 g, and the hull is nacarat. The seed germination rate at 13 similar to 38 degrees C is > 88 %. Under 2.5 similar to 10 cm water flooding, the plant dry weight reduced 50 % similar to 69 %. At seedling stage, Luolijing had a stronger resistance capability against barnyard-grass (Echinochloa crusgalli var. mitis) than an alellopathic rice I-kung-pao, which meant that Luolijing had no allelopathic function. The Luolijing had a tolerance to 0.5% saline-alkaline solution.