《植物生理学报》 2013, 49(11): 1228-1232

甘蔗成熟期叶鞘纤维素酶活性对自然脱落的影响

樊仙, 刘少春*, 高欣欣, 刀静梅, 邓军

云南农业科学院甘蔗研究所, 云南省甘蔗遗传改良重点实验室, 云南开远661600

通信作者：刘少春；E-mail: ynliushch@163.com；Tel: 0873-7225691

摘　要：

采用脱叶性不同的4个甘蔗品种为材料, 研究了在成熟期叶鞘纤维素酶活性对蔗叶脱落的影响。结果表明, 纤维素酶活性影响甘蔗叶片脱落, 在收获期叶鞘纤维素酶活性与植株脱落率均达到最高。不同叶位中, +10叶位纤维素酶活性最高。相关性分析表明, 4个甘蔗品种的+10叶位叶鞘纤维素酶活性与脱落率呈正相关。

关键词：甘蔗; 叶鞘; 纤维素酶; 脱落率

收稿：2013-06-19   修定：2013-09-14

资助：国家自然科学基金(31160257)

Effect of Cellulose Activity on Abscission Rate of Sugarcane (Saccharum officinarum L.) Leaf Sheath in Mature Period

FAN Xian, LIU Shao-Chun*, GAO Xin-Xin, DAO Jing-Mei, DENG Jun

Sugarcane Research Institute, Yunnan Academy of Agricultural Sciences, Yunnan Key Laboratory of Sugarcane Genetics Improvement, Kaiyuan, Yunnan 661600, China

Corresponding author: LIU Shao-Chun; E-mail: ynliushch@163.com; Tel: 0873-7225691

Abstract:

Four sugarcane varieties with different leaf abscission rates were used in this experiment to study the effects of cellulose activity on leaf abscission rate in mature period of sugarcane. The results showed that, the cellulose activity affected the leaf abscission rate of sugarcane, and in the harvest period the cellulose activity and leaf abscission rate both reached the highest. The cellulose activity of +10 leaves sheath from same varieties was the highest. The results of correlation analysis revealed that the cellulose activity of +10 leaf sheath was positively correlated with the abscission rate.

Key words: sugarcane (Saccharum officinarum); leaf sheath; cellulase; abscission rate