| 协青早B//协青早B/东乡野生稻BC1F9群体低磷耐性鉴定及其生理机制 |
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| 作者姓名： | Chen XR Chen M He HH Zhu CL Peng XS He XP Fu JR Ouyang LJ |
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| 作者单位： | 江西农业大学农学院作物生理生态与遗传育种教育部重点实验室/江西省作物生理生态与遗传育种重点实验室,南昌,330045 |
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| 基金项目： | 江西省重大科技创新项目资助 |
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| 摘 要： | 通过水培法对协青早B∥协青早B/东乡野生稻BC1F9群体221个株系低磷耐性进行了鉴定,测定了株高、叶龄、黄叶数、地上部干物质量等形态指标及丙二醛(MDA)、可溶性糖和地上部磷含量等生理指标,计算了磷效率,并对各指标间相关性进行了分析.结果表明:221个株系的7个指标均显示出差异性,耐性株系在低磷胁迫下表现为相对叶龄、相对株高、相对地上部干物质量和相对可溶性糖含量较高,相对黄叶数和相对MDA含量较低,相对地上部磷含量差异不明显;磷效率与磷利用效率和磷吸收效率均呈正相关,其中磷利用效率与磷效率达到极显著水平(P＜0.01),表明东乡野生稻回交重组自交系中耐性株系低磷耐性原因主要是具有高磷利用效率,即其单位吸磷量干物质合成力较高.
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| 关 键 词： | 协青早B//协青早B/东乡野生稻BC1F9群体 低磷耐性 生理机制 |
Low-phosphorus tolerance and related physiological mechanism of Xieqingzao B//Xieqingzao B/Dongxiang wild rice BC1F9 populations |
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| Chen XR,Chen M,He HH,Zhu CL,Peng XS,He XP,Fu JR,Ouyang LJ.Low-phosphorus tolerance and related physiological mechanism of Xieqingzao B//Xieqingzao B/Dongxiang wild rice BC1F9 populations[J].Chinese Journal of Applied Ecology,2011,22(5):1169-1174. |
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| Authors: | Chen Xiao-Rong Chen Ming He Hao-Hua Zhu Chang-Lan Peng Xiao-Song He Xiao-Peng Fu Jun-Ru Ouyang Lin-Juan |
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| Institution: | CHEN Xiao-rong,CHEN Ming,HE Hao-hua,ZHU Chang-lan,PENG Xiao-song,HE Xiao-peng,FU Jun-ru,OUYANG Lin-juan(Ministry of Education Key Laboratory of Crop Physiology,Ecology,Genetics and Breeding/Jiangxi Province Key Laboratory of Crop Physiology,Genetic and Breeding,College of Agronomy,Jiangxi Agricultural University,Nanchang 330045,China) |
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| Abstract: | By the method of water culture,the low-phosphorus tolerance of 221 lines of Xieqingzao B//Xieqingzao B/Dongxiang wild rice BC1F9 populations was indentified.The morphological indices including plant height,leaf age,yellow leaf number,and shoot dry mass as well as the physiological indices including MDA,soluble sugar,and shoot phosphorus content were measured,also,the phosphorus efficiency was calculated,and the correlations among the indices were analyzed.All the 221 lines had differences in the seven test ... |
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| Keywords: | Xieqingzao B//Xieqingzao B/Dongxiang wild rice BC1F9 populations low-phosphorus tolerance physiological mechanism |
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