低磷胁迫对4种香稻苗期磷积累量及叶绿素荧光参数的影响
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海南省自然科学基金项目(318QN295);现代农业产业技术体系建设专项(CARS–01–89)


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    摘要:

    为筛选出耐低磷性较好的香稻,通过不同磷质量浓度(0.00、0.25、0.50、2.00、8.00、31.00 mg/L)营养液试验,研究了香稻绿金香、华香、美香占2号和海香占在苗期低磷胁迫下磷积累特性及叶绿素荧光参数特征。结果表明:出苗后35 d,无磷(P0,磷质量浓度为0.00 mg/L)条件下,绿金香单瓶秧苗磷积累量(1.45 mg)最大,海香占单瓶秧苗磷的积累量(0.88 mg)最低;叶绿素荧光参数方面,对于ΦPSII和ETR,受低磷胁迫影响较大的是海香占,影响的幅度分别为0.08和9.03,qP受低磷胁迫影响较大的是华香,影响幅度为0.15,qN受低磷胁迫影响较大的是美香占2号,影响幅度为0.14;磷的积累量与SPAD值、ΦPSII、qP和ETR呈显著正相关。低磷胁迫下,耐低磷能力从强到弱依次为绿金香、华香、美香占2号、海香占。

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    In order to screen out optimal scented rice materials resistant to low phosphorus, six group of P mass concentration(0.00, 0.25, 0.50, 2.00, 8.00 and 31.00 mg/L) nutrient solution under natural conditions were designed to treat four scented rice materials(Lyujinxiang, Huaxiang, Meixiangzhan 2, Haixiangzhan) at seedling stage. The phosphorus accumulation characteristics and chlorophyll fluorescence parameters were analyzed. The results showed that without P(P0, P mass concentration was 0.00 mg/L) at 35 d, Lyujinxiang was the highest in the phosphorus accumulation(1.45 mg/bottle), Haixiangzhan was the lowest(0.88 mg/bottle). For chlorophyll fluorescence parameters, Haixiangzhan was affected by low phosphorus stress in ΦPSII and ETR with the affection extent coefficient 0.08 and 9.03 respectively, Huaxiang was affected at qP with the affection extent coefficient 0.15 and Meixiangzhan 2 was greatly affected at qN with the affection extent coefficient 0.14. Meanwhile, phosphorus accumulation was significantly positively related to SPAD values, ΦPSII, qP, and ETR. By comprehensive evaluations, the low phosphorus resistance of the four scented materials from strong to weak was Lyujinxiang, Huaxiang, Meixiangzhan 2, Haixiangzhan under low phosphorus stress.

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陈健晓,王小娟,屠乃美,王效宁,唐清杰,刘爱玉.低磷胁迫对4种香稻苗期磷积累量及叶绿素荧光参数的影响[J].湖南农业大学学报:自然科学版,2021,47(4):.

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  • 在线发布日期: 2021-08-11
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