干旱区生态环境知识资源中心(Arid): 苹果采前落果与内源激素的关系

Arid

	苹果采前落果与内源激素的关系
其他题名	Studies on the relationship between several endogenous phytohormones and preharvest fruit drop of apple
	孟玉平 1; 曹秋芬 1; 樊新萍 2; 程恩明 2; 孙俊杰 2
来源期刊	果树学报
ISSN	1009-9980
出版年	2005
卷号	22 期号:1 页码:6-10
中文摘要	为了探讨苹果采前落果与内源激素之间的关系,在采前8周间定期测定了不同苹果品种的果柄、果台和离层形成部位组织中IAA、ABA含量;在采收前20 d内定期测定了离层部位组织中细胞壁分解酶(Cellulase)的活性;在收获期测定了果实乙烯的发生量.结果表明:不同品种果柄、果台和离层部位组织中IAA和ABA含量变化有差异,但它们变化的总趋势相似,都是随着果实成熟IAA含量下降,而ABA含量上升;不同品种的成熟果实中乙烯发生量有很大差异,以落果多的品种显著大于落果少的品种;采前落果重的品种离层部位组织中细胞壁分解酶的活性在果实成熟期急剧增加.由于果实进入成熟阶段后,IAA含量下降,ABA含量升高,ABA/IAA之间的相对平衡被打破,高ABA/IAA以及高乙烯会刺激离层组织中细胞壁分解酶的活性增高,进而促进离层形成,这可能是导致落果发生的原因.
英文摘要	In order to understand the relationship between endogenous phytohormones and preharvest fruit drop of apples, contents of IAA and ABA in peduncle, bourse and the tissues around abscission zone of several apple cultivars were periodically analyzed during 8 weeks before harvest,and activity of cellulase in the tissues around abscission zone were periodically analyzed during 20 days before harvest, arid ethylene evolution in fruit were analyzed in harvest lime. Results showed that contents of IAA and ABA in peduncle, bourse and the tissues around abscission zone among several cultivars were very different, but their trend of change was similar, IAA content decreased and ABA content increased toward harvest time for all the cultivars. Ethylene evolution in fruit of the cultivars with higher preharvest drop was evidently higher than the cultivars with less preharvest drop. Cellulase activity in the tissues around abscission zone of the cultivars with higher preharvest drop rapidly increased toward harvest time. Because of IAA content decreasing and ABA content increasing toward fruit maturity time, the relative balance of IAA and ABA was broken. A higher level of ABA/IAA caused increase of ethylene evolution in fruit and cellulase activity in tissues around abscission zone,which probably accelerated the forming of abscission zone and aggravated the fruit drop.
中文关键词	苹果 ; 采前落果 ; 细胞壁分解酶
英文关键词	IAA ABA Ethylene Apple Preharvest fruit drop IAA ABA Ethylene Cellulase
语种	中文
国家	中国
收录类别	CSCD
WOS类目	HORTICULTURE
WOS研究方向	Agriculture
CSCD记录号	CSCD:1878786
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/206375
作者单位	1.山西省农业生物技术研究中心, 太原, 山西 030031, 中国; 2.山西省果树研究所, 太谷, 山西 030815, 中国
推荐引用方式 GB/T 7714	孟玉平,曹秋芬,樊新萍,等. 苹果采前落果与内源激素的关系[J],2005,22(1):6-10.
APA	孟玉平,曹秋芬,樊新萍,程恩明,&孙俊杰.(2005).苹果采前落果与内源激素的关系.果树学报,22(1),6-10.
MLA	孟玉平,et al."苹果采前落果与内源激素的关系".果树学报 22.1(2005):6-10.