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| 高原夏季胡萝卜肉质根内源激素变化及其与先期抽薹的关系 | |
| 引用本文： | 杨永岗,张化生,李亚莉,王晓巍,郁继华,王小丽.高原夏季胡萝卜肉质根内源激素变化及其与先期抽薹的关系[J].园艺学报,2010,37(7):1102-1108. |
| 作者姓名： | 杨永岗 张化生 李亚莉 王晓巍 郁继华 王小丽 |
| 作者单位： | 1. 甘肃农业大学农学院,兰州730070;甘肃省农业科学院蔬菜研究所,兰州730070 2. 甘肃省农业科学院蔬菜研究所,兰州,730070 3. 甘肃农业大学农学院,兰州,730070 4. 甘肃农业大学外语学院,兰州,730070 |
| 基金项目： | 国家地方科技支撑计划课题 |
| 摘 要： | 以胡萝卜耐抽薹品种‘新秀三红’和易抽薹品种‘岐山透心红’的未抽薹和抽薹植株的肉质根为材料,研究了高原夏季胡萝卜肉质根内源激素变化及其与先期抽薹的关系。结果表明:苗期肉质根内源激素含量逐渐下降;叶片旺盛生长期GA3、GA4、IAA和IPA含量先升高后下降,ZR和DHZR含量持续下降后逐渐升高;肉质根迅速膨大期ZR和IAA含量逐渐升高,其它激素含量均渐下降。长日照条件下,易抽薹品种中未抽薹植株肉质根的内源GA3和ZR含量较低,GA4和IAA含量较高,与耐抽薹品种的差异均显著;易抽薹品种中先期抽薹植株肉质根的IAA和IPA含量较高,GA3和ABA含量较低,与其未抽薹植株肉质根的差异均显著。较低含量的GA3与较高含量的IAA促进胡萝卜的先期抽薹,较高的IAA/ZR、GA4/ZR比值可导致胡萝卜的先期抽薹。 |
| 关 键 词： | 胡萝卜 肉质根 内源激素 先期抽薹 |
Endogenous Hormone Content of Fleshy Root in Relation to Early Bolting in Summer Cultivated Carrot on Plateau |
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| YANG Yong-gang,ZHANG Hua-sheng,LI Ya-li,WANG Xiao-wei,YU Ji-hua,WANG Xiao-li.Endogenous Hormone Content of Fleshy Root in Relation to Early Bolting in Summer Cultivated Carrot on Plateau[J].Acta Horticulturae Sinica,2010,37(7):1102-1108. | |
| Authors: | YANG Yong-gang ZHANG Hua-sheng LI Ya-li WANG Xiao-wei YU Ji-hua WANG Xiao-li |
| Institution: | （1College of Agronomy，Gansu Agricultural University，Lanzhou 730070，China；2Vegetable Research Institute，Gansu Academy of Agricultural Sciences，Lanzhou 730070，China；3College of Foreign Languages，Gansu Agricultural University，Lanzhou 730070，China） |
| Abstract: | The fleshy and bolting roots of‘Qishan Touxinhong’（an early-bolting variety）and the fleshy root of‘Xinxiu Sanhong’（a late-bolting variety）were used as materials to discuss the relationship between the change of endogenous hormone content and early bolting of carrot（Daucus carota L.var. sativa DC.）. The results showed that the contents of endogenous hormones in fleshy root decreased gradually on seedling stage. The contents of GA3，GA4，IAA and IPA increased firstly to higher levels and then declined by degrees，while the contents of ZR and DHZR continually declined to the lowest levels and then increased during leaf fast-developing period. The contents of ZR and IAA increased to the higher levels and the other endogenous hormones content declined slowly during root fast-thickening stage. During the long-days in summer，compared with‘Xinxiu Sanhong’，the contents of GA3 or ZR in fleshyroots of‘Qishan Touxinhong’（FRQ）were significantly lower，while GA4 and IAA in FRQ were significantly higher；In bolting roots of‘Qishan Touxinhong’，the contents of IAA and IPA were significantly higher and GA3，ABA were significantly lower than those of in FRQ. As to early bolting，lower content of GA3 and higher content of IAA played positive roles. Furthermore，higher ratios of IAA to ZR，GA4 to ZR led to early bolting of carrot. |
| Keywords: | carrot Daucus carota L var sativa DC fleshy root endogenous hormone content early bolting |
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