LI Yang,QIN Zhiwei,ZHOU Xiuyan,et al.Evaluation of Drought Tolerance in Major Cucumber Germplasm[J].Northern Horticulture,2016,40(20):5-8.[doi:10.11937/bfyy.201620002]
黄瓜主要种质资源耐旱性评价
- Title:
- Evaluation of Drought Tolerance in Major Cucumber Germplasm
- Keywords:
- cucumber; drought tolerance; germplasm resources; evaluation
- 文献标志码:
- A
- 摘要:
- 以16个主要黄瓜品种为试材，通过设定正常水分处理和干旱处理（正常水量的50%）的方法，研究了干旱对黄瓜成株期植株的形态、生理生化指标的影响，以期筛选出黄瓜耐旱性鉴定指标，为抗旱黄瓜品种的选育提供依据。结果表明：干旱处理对不同生态类型黄瓜的根干质量、地上部干质量、株高、丙二醛含量、净光合速率、蒸腾速率、气孔导度及叶面积有显著影响，应用隶属函数值法对黄瓜抗旱性进行分析，得出根干质量是与耐旱性相关性最大的指标，并通过逐步回归建立总隶属函数值与根干质量的最优回归方程Y=0.575+0.417X，用此方程对供试材料进行预测，预测值与总隶属函数值基本一致。
- Abstract:
- Taking 16 major cucumber varieties as experimental materials，by setting the normal water treatment and drought (50% of the normal amount of water)，the morphology of drought cucumber adult stage material，physiological and biochemical indexes were studied，and filtered out cucumber drought tolerance index，to provide the basis for breeding drought-resistant varieties of cucumbers.The results showed that the effect of drought on different ecological types of cucumber′s root dry weight，shoot dry weight，plant height，MDA content，net photosynthetic rate，transpiration rate，stomatal conductance and leaf area were significant，subordinate function value method was used to analysis the cucumber drought resistance analysis，the root dry weight was the most relevant indicator of drought tolerance.Then a regression equation with subordinate function value and root dry weight for identifying cucumber drought tolerance was established Y=0.575+0.417X，this equation was used to predict drought resistance of materials，and the total value of the membership function was basically the same as predict value.
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备注/Memo
第一作者简介：李阳（1992-），女，硕士研究生，研究方向为黄瓜分子遗传育种。E-mail：1101471317@qq.com.责任作者：秦智伟（1957-），男，博士，教授，博士生导师，研究方向为黄瓜遗传育种。E-mail：qzw303@126.com.基金项目：“十二五”国家科技支撑计划资助项目（2012BAD02B03）；黑龙江省自然科学基金青年基金资助项目（QC2012C122）。