不同甘蔗品系对养分胁迫响应的差异研究

为了评价割手密、斑茅与甘蔗杂交后的后代材料在养分缺乏情况下的养分利用特性,在砂培条件下,以斑茅、割手密和甘蔗杂交后代品系及甘蔗栽培种为材料,研究了低氮、低磷和低钾胁迫对甘蔗各品系的植株生长及甘蔗养分含量、积累量的影响.结果表明：低氮、低磷和低钾胁迫均显著影响甘蔗植株生长,表现出植株株高、茎粗、地上部分干重及根系干重下降,以YC 10-29在低钾胁迫下、YC06-92在低磷胁迫下降幅较小;在养分胁迫下,甘蔗植株的根冠比增加,低磷和低钾胁迫降低了根茎粗,而总根长增加,以YC06-92在低钾胁迫下总根长增加最多,约为对照的2.67倍;3种养分胁迫均影响植株对其他两种养分的吸收利用,表现出低钾胁迫下植...

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Bibliographic Details
Published in广东农业科学 Vol. 42; no. 12; pp. 38 - 43
Main Author 曾巧英 江永 黄莹 符成 敖俊华 齐永文 李奇伟
Format Journal Article
LanguageChinese
Published 广州甘蔗糖业研究所/广东省甘蔗改良与生物炼制重点实验室,广东广州,510316 2015
Subjects
养分含量
养分胁迫
植株生长
甘蔗
甘蔗
养分胁迫
植株生长
养分含量
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ISSN1004-874X

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Summary:为了评价割手密、斑茅与甘蔗杂交后的后代材料在养分缺乏情况下的养分利用特性,在砂培条件下,以斑茅、割手密和甘蔗杂交后代品系及甘蔗栽培种为材料,研究了低氮、低磷和低钾胁迫对甘蔗各品系的植株生长及甘蔗养分含量、积累量的影响.结果表明：低氮、低磷和低钾胁迫均显著影响甘蔗植株生长,表现出植株株高、茎粗、地上部分干重及根系干重下降,以YC 10-29在低钾胁迫下、YC06-92在低磷胁迫下降幅较小;在养分胁迫下,甘蔗植株的根冠比增加,低磷和低钾胁迫降低了根茎粗,而总根长增加,以YC06-92在低钾胁迫下总根长增加最多,约为对照的2.67倍;3种养分胁迫均影响植株对其他两种养分的吸收利用,表现出低钾胁迫下植株的磷含量增加,而低氮胁迫下植株钾含量和磷含量增加、且低氮胁迫下磷和钾的累积量分别高于在低磷和低钾胁迫下的磷和钾的积累量,其中以ROC22最为明显.含有割手密和斑茅血缘的品系YC10-29和YC06-92具有较高的耐低钾和低磷胁迫特性,而ROC22具有较高的耐低氮胁迫特性.
Bibliography:44-1267/S
ZENG Qiao-ying, JIANG Yong, HUANG Ying, FU Cheng, AO Jun-hua, QI Yong-wen, LI Qi-wei （ Guangzhou Sugarcane Industrial Research Institute/Guangdong Key Lab. of Sugarcane Improvement and Biorefinery , Guangzhou 510316, China）
sugarcane; low nutrient stress; growth of plant; concentration of nutrient
To study the response of sugarcane hybrids under nutrient stress, four different varieties were used as materials, including one BC3 from hybrids of sugarcane and Erianthus arundmaceus, one BC1 from hybrids of sugarcane and Saccharum spontaneum and two cultivated varieties. The plant growth, nutrient concentration and nutrient accumulation amount were evaluated under low nitrogen stress, low phosphorus stress or low potassium stress. The results revealed that plant height, diameter, dry weight of shoot and dry weight of root of four varieties all decreased under low nutrient stress. The decrease in these parameters was lower in YC10-29 under low potassium stress and YC06-92 under low phosphorus stress than th
ISSN:1004-874X