不同熟性洋葱休眠期生理生化的变化

园艺学报 ›› 2007, Vol. 34 ›› Issue (1): 221-224.

不同熟性洋葱休眠期生理生化的变化

陈沁滨^1,2; 侯喜林^1*; 王建军¹ ; 韩建明¹

(¹ 南京农业大学作物遗传与种质创新国家重点实验室, 南京210095; ² 连云港市农业科学院, 江苏连云港222006)

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-02-25 发布日期:2007-02-25

Physiological and Biochemical Changes of Onion with Different MaturitiesDuring the Dormancy Stage

CHEN Qin-bin^1,2; HOU Xi-lin^1*; WANG Jian-jun¹; HAN Jian-ming¹

( ¹ State Key Laboratory of Crop Genetics & Germplasm Enhancement, Nanjing 210095, China; ² Lianyungang Academy of Agricultural Science, L ianyungang, Jiangsu 222006,China)

Received:1900-01-01 Revised:1900-01-01 Online:2007-02-25 Published:2007-02-25

摘要/Abstract

摘要： 比较了早、中、晚熟3个洋葱品种休眠期呼吸速率以及不同部位的可溶性蛋白、可溶性糖、
SOD、POD和内源激素IAA及ABA的动态变化。结果表明: 晚熟品种港葱841生理休眠期最长, 达70 d左
右, 早熟品种阳春黄最短, 约40 d。呼吸速率、可溶性蛋白、SOD、POD在生理休眠期结束前都有一个快
速升高再降低的过程, 可溶性糖含量的变化在生理休眠期结束后急速下降; IAA和ABA的表现相反, 休眠
前期, ABA含量最高, 而IAA含量极低, 在生理休眠结束前, ABA含量急剧下降而IAA含量急剧上升。从
各种生理生化指标分布看, 均为内层>中层>外层。洋葱收获后, 高水平的ABA、低水平的IAA、较低的
可溶性蛋白含量和较高的可溶性糖含量有利于休眠的维持。

关键词: 洋葱, 生理生化, 休眠

Abstract: The dynamic changes of RR ( resp iratory rate) , SPC ( soluble p rotein content) , SSC ( sol
uble sugar content) , SOD, POD, endohormone IAA and ABA in different parts of three onion varieties ( in
cluding early2maturing, middle2maturing and late maturing types) with differentmaturities during the dorman
cy stage were studied. The results suggested that the length of physiological dormancywas different among the
three varieties, the dormancy period of the late2maturing variety Gangcong 841 was the longest ( about 70 d)
and the early2maturing variety Yangchunhuang was the shortest ( about 40 d). The resp iratory rate, SPC and
the activity of SOD, POD showed a rap id rising trend and then falling trend before the end of physiological dor
mancy. The SSC decreased rap idly after physiological dormancy. The content ofABA was highest in the early
dormancy period, afterwards, a rap id falling until the end of physiological dormancy. Change of IAA was
rightly reverse to ABA. The distribution of these physiological and biochemical data were interior scales >mid
dle scales > exterior scales. It is concluded that the higherABA, lower IAA, SPC and higher SSC are benefi
cial to remain dormancy after harvest.

Key words: Onion, Physiological and biochemical, Dormancy

陈沁滨;侯喜林;王建军;韩建明. 不同熟性洋葱休眠期生理生化的变化[J]. 园艺学报, 2007, 34(1): 221-224.

CHEN Qin-bin;HOU Xi-lin;WANG Jian-jun;HAN Jian-ming. Physiological and Biochemical Changes of Onion with Different MaturitiesDuring the Dormancy Stage[J]. ACTA HORTICULTURAE SINICA, 2007, 34(1): 221-224.

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