Effects of Plucking Hearts in Bud Stage on the Hormones in the Process of Tuber Formation in Solanum tuberosum L.

ACTA HORTICULTURAE SINICA ›› 2008, Vol. 35 ›› Issue (5): 667-672.

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Effects of Plucking Hearts in Bud Stage on the Hormones in the Process of Tuber Formation in Solanum tuberosum L.

Zheng Shun-lin¹，Yuan Ji-chao¹，Wang Xi-yao¹，and Ma Jun^2*

(¹ Research and Development Center of Potato, College of Agronomy, Sichuan Agricultural University，Ya'an ，Sichuan 625014，China；² Rice Research Institute of Sichuan Agricultural University，Wenjiang，Sichuan 611130，China)

Received:2008-01-10 Revised:2008-04-17 Online:2008-05-25 Published:2008-05-25
Contact: Ma Jun

Abstract

Abstract:

In order to elucidate the physiology mechanism of plucking hearts in bud stage to accelerate tuberization，the changes of endogenous hormones in the process of tuber formation in potato(Solanum tuberosum L.) were analyzed . The results showed that in the middle stage of tuber formation，GA₃, IAA and ZT content increased obviously ， the high peak time and changing trend of JAs content were changed. For the balance relationship among the IAA, GA3, JAs and the ABA，the value of IAA/ABA, IAA/JAs, GA₃/ABA and GA₃/JAs were raised at the middle stage of tuberization and were reduced at prophase and anaphase. Plucking hearts could alter the content of hormons and the relationships among them, opitimize the level of hormones in the middle stage of tuberization and improve the tuber development.

Key words: potato, the bud stage, plucking hearts, tuberization, hormones

CLC Number:

S 532

Zheng Shun-lin;Yuan Ji-chao;Wang Xi-yao;and Ma Jun . Effects of Plucking Hearts in Bud Stage on the Hormones in the Process of Tuber Formation in Solanum tuberosum L.[J]. ACTA HORTICULTURAE SINICA, 2008, 35(5): 667-672.

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Effects of Plucking Hearts in Bud Stage on the Hormones in the Process of Tuber Formation in Solanum tuberosum L.

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