The Effect of Ca ( NO3 ) 2 and GA Sprayed on Leaves on the Fruit Cracking of‘Nuomici’Litchi

ACTA HORTICULTURAE SINICA ›› 2001, Vol. 28 ›› Issue (4): 348-350.

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The Effect of Ca ( NO₃ )₂ and GA Sprayed on Leaves on the Fruit Cracking of‘Nuomici’Litchi

Peng Jian, Xi Jiabin, Tang Xudong, Wang Yuguo, Si Xuemei, and Cheng Jiasen

(1 Department of Applied Bio2Engineering , Shenzhen Polytechnic , Shenzhen 518055;　2Life Science College , Zhongshan University , Guangzhou 510275;　3 Orchard , Nanshan District , Shenzhen 518055)

Received:1900-01-01 Revised:1900-01-01 Online:2001-08-25 Published:2001-08-25

Abstract

Abstract: ‘Nuomici’Litchi trees (82year-old) were sprayed with calcium and gibberllin and the control trees were sprayed with water. The results showed that the treatment with Ca (NO₃) ₂ and treatment with GA all could reduce
the proportion of cracking fruit distinctly , In the early stage , the content of water2soluble pectin and protopectin increased , meanwhile the content of protopectin increased more than the content of watersoluble pectin , but when the fruit was becoming ripe , the content of watersoluble pectin decreased gradually while the content of protopectin increased largely. PE and PGactivities tended to increase with fruit development till ripening stage when they turned to decrease sharply. There was significant correlation between PG activity and the content of water-soluble pectin. CX increased throughout the whole development and has two peaks.

Key words: Litchi, Cracking fruit, Enzyme activity, Pectin content

CLC Number:

Peng Jian;Xi Jiabin;Tang Xudong;Wang Yuguo;Si Xuemei;and Cheng Jiasen. The Effect of Ca ( NO₃ )₂ and GA Sprayed on Leaves on the Fruit Cracking of‘Nuomici’Litchi[J]. ACTA HORTICULTURAE SINICA, 2001, 28(4): 348-350.

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The Effect of Ca ( NO₃ )₂ and GA Sprayed on Leaves on the Fruit Cracking of‘Nuomici’Litchi

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