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再生稻佳辐占低桩机割再生分蘖节根的萌发特性
Authors
俞道标
姜照伟
+6 more
李义珍
沈如色
王侯聪
解振兴
郑景生
黄育民
Publication date
16 July 2018
Publisher
Abstract
为探索低桩机割再生稻高产途径,研究了水稻品种佳辐占再生分蘖节根的萌发特性.结果表明:头季低桩机割后再生季成穗分蘖为倒4、倒5节分蘖及其子蘖;倒4、倒5节分蘖有4个发根节,子蘖有3个发根节,每节萌发5~8条节根.各节节根萌发有恒定叶龄期:当第n节叶片开始伸长时,第n-3节节根开始萌发(节根原基突破茎秆表皮);当第n节叶片刚抽出时(该叶伸长近半),第n-3节少数节根显著伸长;当第n节叶片抽出70%时(该叶定长),第n-3节节根萌发数稳定.倒4、倒5节分蘖在头季机割后约10d,子蘖在头季机割后约20d,开始从前出叶节萌发节根,至孕穗初始期前后最上一节节根结束萌发,抽穗后不久全部侧根结束萌发.上述结果可为调控再生稻根系发育提供科学依据.福建省科技厅省属公益类专项(2015R1021-9);;福建省农业科学院青年创新团队项目(STIT2017-3-3);;国际原子能机构合作项目(CRP17031
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Last time updated on 10/06/2020