Effects of low temperature stress on seedling emergence and seedling growth of direct-seeding early rice
Journal Title: 广东农业科学 - Year 2018, Vol 45, Issue 3
Abstract
"In order to explore the effect of low temperature stress from sowing to seedling growth of early rice. With Zhongjiazao17 as material，the effects of low temperature and treatment time on the morphological and physiological indexes of germination and seedling were studied. The results showed that the breaking rice seed was more resistant to low temperature than the bud（ bud half length）. When the treatment temperature was below 10℃ and the treatment days was more than 2 days，the seedling emergence rate of the bud decreased more significantly than the breaking rice seed with the temperature decreased and the time prolonged. The younger seedling，the stronger the cold tolerance ability，when the temperature dropped to 6℃，seedlings would basically stop growing. Under the influence of low temperature，the MDA content of plant on the ground increased gradually with the increase of seedling age，the lower the temperature，the more obvious change. The proline content decreased gradually with the increase of seedling age，seedling age was smaller，the higher the content of proline. Therefore，under the condition of low temperature stress，germination degree of the bud was more sensitive to low temperature，the large seedling age was more sensitive to the small seedling age. This paper would provide reference for guidance to the direct seeding production of double season early rice."
Authors and Affiliations
Li-cheng DUAN, Rui-ge GUO
Keywords
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- EP ID EP596241
- DOI 10.16768/j.issn.1004-874X.2018.03.001
- Views 92
- Downloads 0
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