| 低磷胁迫下玉米自交系磷高效基因型筛选 |
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| 引用本文： | 龚江,李绍长,夏春兰,王军,李明书.低磷胁迫下玉米自交系磷高效基因型筛选[J].新疆农业科学,2002,39(2):77-81. |
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| 作者姓名： | 龚江 李绍长 夏春兰 王军 李明书 |
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| 作者单位： | 1. 石河子大学作物高产研究中心,832003
2. 新疆康地科技发展股份有限公司,830000 |
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| 摘 要： | 采用小区试验 ,在不施磷 (P0 )和施磷 (P1)条件下 ,研究了 2 6个玉米自交系的磷营养效率。结果表明 :供试材料按对磷的吸收效率可划分为高效吸收型、中效吸收型和低效吸收型 ;按对磷的利用效率可划分为高效利用型、中效利用型和低效利用型。研究中发现供试材料中只有极少数属于磷高效型 ,耐低磷条件 ,绝大多数属于磷中、低效型。植株相对磷浓度可作为玉米吸磷效率的指标 ,相对产量可作为其磷利用效率指标
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| 关 键 词： | 玉米 自交系 低磷胁迫 磷效率 |
| 文章编号： | 1001-4330(2002)02-0077-05 |
| 修稿时间： | 2001年12月1日 |
Selection of Maize Inbred for High Phosphate Efficiency in Low Phosphate Stress |
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| Abstract: | In plot experiment,the phosphate efficiency of 26 maize inbred with(P 1)and without(P 0)phosphate application were studied.The results showed that the genotypes can be classified into 3 types according to their absorption efficiency;they were high P-absorption efficiency,moderate P-absorption efficiency and low P-absorption efficiency;they can alse be classified into 3 types while concerning of their utilization efficiency;they were high,moderate and low P-utilization efficiency.It also suggested that,only a few genotypes belong to high P-efficiency,which can tolerate low phosphate stress,while most of genotypes belong to moderate or low P-efficiency.In addition,plant relative P concentration and relative yield can be employed as the criterion for high phosphate uptake and utilization efficiency selection,respectively. |
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| Keywords: | maize inbred low phosphate stress phosphate efficiency |
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