摘要
对核桃果实成熟过程中呼吸速率 ,乙烯释放量和内源激素IAA (吲哚乙酸 )、ABA (脱落酸 )、GA3(赤霉素 )、ZR (玉米素核苷 )、Z (玉米素 )含量的变化进行了测定。结果表明 ,除种仁中Z含量较高外 ,青皮中其它激素水平均高于种仁。随着果实的成熟 ,IAA、GA3、Z、ZR含量及乙烯释放量均呈下降趋势 ;而青皮中ABA含量则逐渐增加。果实成熟后青皮中GA3和种仁中Z含量明显增长 ,果实乙烯释放量明显增高 ,而采后果实的乙烯释放量增加更为迅速。呼吸速率与乙烯释放量变化基本相同。采后用乙烯利处理的果实呼吸速率增加明显。对核桃果实的呼吸跃变类型进行了讨论。
The variation in contents of IAA,ABA,GA 3,ZR and Zeatin were measured systematically during ripening of walnut fruit.The results showed that the contents of all these hormones except zeatin in walnut hull were higher than those in walnut kernel.The levels of IAA,GA 3,ZR,zeatin and ethylene in walnut fruit decreased with fruit maturing,but the content of ABA in walnut hull increased gradually.The contents of GA 3 in hull and zeatin in kernel showed significant increase at maturity.Ethylene in fruit was released greatly at maturity,especially after harvest.The change of the respiratory rate was almost the same as the changes of ethylene in fruit.After harvest,the fruit treated with ethephon showed rapid increase in respiratory rate.The type of respiratory climacteric in walnut fruit was also discussed in this paper.
出处
《园艺学报》
CAS
CSCD
北大核心
2000年第3期167-170,共4页
Acta Horticulturae Sinica
基金
河北省科委及河北农业大学 9816工程资助项目
关键词
核桃
颗粒成熟
跃变型
呼吸速率
内源激素
Walnut(Juglans regia L.)
Fruit
Maluration
Respiratory intensity
Hormone
Ethylene
