Changes of Several Osmotica in Tea Plant (Camellia sinensis) Under Soil Water Stress

doi:10.11924/j.issn.1000-6850.casb15030206

Abstract

Abstract: In order to understand the adaptability of different varieties of tea plants to drought environment, the contents of several osmotica in tea plants under soil water stress were studied. Two-year-old seedlings of tea plants (Camellia sinensis cv. Tieguanyin and C.sinensis cv. Fudingdabaicha) were cultivated in a pot experiment to investigate the changes of several osmotica under four water stress treatments: 75% (normal water supply), 55% (slight water stress), 35% (mild water stress) and 20% (severe water stress) of soil field capacity. The results showed that the relative water contents (RWC) and free proline contents of Camellia sinensis cv. Tieguanyin were lower than that of Camellia sinensis cv. Fudingdabaicha, while the soluble protein and soluble sugar content were higher than that of Camellia sinensis cv. Fudingdabaicha under normal water supply conditions. Under water stress conditions, the RWC of Camellia sinensis cv. Tieguanyin and C.sinensis cv. Fudingdabaicha decreased, and the contents of soluble protein, soluble sugar and proline increased along with the higher of the stress degree. But under the severe water stress, soluble protein and proline contents of C.sinensis cv. Fudingdabaicha decreased. In the same water stress conditions, the decreasing RWC amplitude of Camellia sinensis cv. Tieguanyin was less than that of C.sinensis cv. Fudingdabaicha, and the increasing amplitude of soluble protein, soluble sugar and proline contents were higher than that of C.sinensis cv. Fudingdabaicha. Compared with C.sinensis cv. Fudingdabaicha, C.sinensis cv. Tieguanyin had higher capacity to acclimate soil water stress.

CLC Number:

S571.1

Guo Chunfang,Luo Lingna,He Shuiping and Sun Yun. Changes of Several Osmotica in Tea Plant (Camellia sinensis) Under Soil Water Stress[J]. Chinese Agricultural Science Bulletin, 2015, 31(28): 126-131.

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