CAJ | 학술논문

试验以伽马射线辐射选育的脆性突变(brittleness mutation,BM)水稻和亲本中花11(Zhonghua 11)为材料,分析分蘖期、抽穗期(约50%抽穗)、成熟期细胞壁纤维组成动态变化特点.结果表明,1)整个生育期BM水稻都具有茎叶易折的特点.2)对照亲本各部位的纤维素含量有先升高后降低的变化趋势,半纤维素含量前期变化不显著,后期显著下降;BM水稻各部位的纤维素含量则表现出逐渐升高的趋势,半纤维素含量尽管有逐渐下降的趋势,但变化不显著.3)与对照亲本相比,BM水稻细胞壁纤维组分变化较大:分蘖期,BM水稻茎、叶、鞘纤维素含量分别极显著下降34.69%, 25.89%和28.85%(P<0.01),而半纤维素含量则分别极显著上升15.77%, 31.31%和19.32%(P<0.01);抽穗期, BM水稻茎、叶、鞘纤维素含量分别极显著下降32.31%,32.25%和34.69%(P<0.01),而半纤维素含量则分别极显著上升25.39%,32.78%和20.91%(P<0.01);成熟期,两者纤维素差异不显著,但BM水稻茎、叶、鞘半纤维素含量依然极显著高于对照亲本.鉴于以上特征,BM水稻具有作为饲料稻的潜在优势.
시험이가마사선복사선육적취성돌변(brittleness mutation,BM)수도화친본중화11(Zhonghua 11)위재료,분석분얼기、추수기(약50%추수)、성숙기세포벽섬유조성동태변화특점.결과표명,1)정개생육기BM수도도구유경협역절적특점.2)대조친본각부위적섬유소함량유선승고후강저적변화추세,반섬유소함량전기변화불현저,후기현저하강;BM수도각부위적섬유소함량칙표현출축점승고적추세,반섬유소함량진관유축점하강적추세,단변화불현저.3)여대조친본상비,BM수도세포벽섬유조분변화교대:분얼기,BM수도경、협、초섬유소함량분별겁현저하강34.69%, 25.89%화28.85%(P<0.01),이반섬유소함량칙분별겁현저상승15.77%, 31.31%화19.32%(P<0.01);추수기, BM수도경、협、초섬유소함량분별겁현저하강32.31%,32.25%화34.69%(P<0.01),이반섬유소함량칙분별겁현저상승25.39%,32.78%화20.91%(P<0.01);성숙기,량자섬유소차이불현저,단BM수도경、협、초반섬유소함량의연겁현저고우대조친본.감우이상특정,BM수도구유작위사료도적잠재우세.
The kinetic changes of cell wall components between brittleness mutation (BM) rice [Obtained by gamma-ray (γ) treatment] for seeds and its wild type from japonica variety Zhonghua-11 was investigated. 1) BM-rice stem and leaves had brittle and fragile characters in all growth stages. 2) For wild type rice, cellulose content increased during vegetative growth, and then decreased during reproductive growth. Hemi-cellulose content was not changed significantly in the forward process, but decreased drastically in the backward process. For BM-rice, cellulose content was increased gradually over the whole life of the plant. Hemi-cellulose content showed a decreasing trend, but this was not significant between the growth stages. 3) At the tillering stage, the cellulose content of BM-rice stem, leaf and sheath significantly decreased (P<0.01) by 34.69%, 25.89% and 28.85%, respectively compared with that of wild type but the corresponding hemi-cellulose content significantly increased (P<0.01) by 15.77%, 31.31% and 19.32%, respectively. At the heading stage, the cellulose content of BM-rice stem, leaf and sheath significantly decreased (P<0.01) by 32.31%, 32.25% and 34.69%, respectively and the hemi-cellulose content significantly decreased (P<0.01) by 25.39%, 32.78% and 20.91%, respectively. At maturation, BM-rice and CK-rice cellulose content were not significantly (P>0.05) different, but hemi-cellulose contents of BM-rice stem, leaf and sheath were significantly higher than those of the CK-rice. Above all, BM-rice has a potential advantage for utilization as a fodder-rice.