干旱对沙棘休眠、萌芽期内源激素及萌芽特性的影响

doi:10.11707/j.1001-7488.20010507

Abstract

Abstract:

Relationship between water status, endogenous hormone and sprout rate of 2 years old China seabuchthorn under water deficit was analyzed. The main results are: water deficit made water content, free water, water potential and endogenous GA_1/3 of seabuckthorn seedlings decreased, while endogenous ABA level increased obviously during dormancy stage in winter and sprout period in spring, so ratio of GA_1/3/ABA droped and came to threshold value later. As a result, the germination day delayed, especially that of seedlings under serious water deficit was postponed even for 25 days. Besides, seedlings grew slowly after sprout. Seabuckthorn suffered slight injure from a long time of medium soil water stress and sprout date was also delayed a few days and growth after sprout was restrained to a small extent.

Key words: Soil drought, Endogenous hormone, Dormancy stage, Sprout period, Seabuckthorn

Li Lixia;Liang Zongsuo;Han Ruilian. EFFECT OF SOIL DROUGHT ON ENDOGENOUS HORMONE AND SPROUT CHARACTER IN DORMANCY AND SPROUT PERIOD OF SEABUCKTHORN SEEDLINGS[J]. Scientia Silvae Sinicae, 2001, 37(5): 35-40.

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EFFECT OF SOIL DROUGHT ON ENDOGENOUS HORMONE AND SPROUT CHARACTER IN DORMANCY AND SPROUT PERIOD OF SEABUCKTHORN SEEDLINGS

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