CAJ | 학술논문

以抗倒伏能力不同的4个荞麦品种研究表明,荞麦茎秆抗倒伏能力与茎秆解剖结构和木质素代谢密切相关。倒伏率与茎秆抗折力参数(r=-0.907, P<0.01)、木质素含量(r=-0.844, P<0.01)、机械组织厚度(r=-0.881, P<0.01)、茎壁厚度(r=-0.947, P<0.01)、维管束面积(r=-0.846, P<0.01)、机械组织层数(r=-0.806, P<0.05)和大维管束数目(r=-0.709, P<0.05)呈显著负相关,而与倒伏指数(r=0.842, P<0.01)呈显著正相关。木质素含量与苯丙氨酸解氨酶(PAL)活性(r =0.984, P <0.01)、4-香豆酸：CoA连接酶(4CL)活性(r =0.927, P <0.01)和肉桂醇脱氢酶(CAD)活性(r =0.862, P<0.01)呈显著正相关。茎秆木质素含量、机械组织层数、机械组织厚度、茎壁厚度、大维管束数目和维管束面积可以作为荞麦茎秆抗倒伏能力的重要评价指标。茎秆木质素含量高、机械组织层数多、机械组织和茎壁厚、大维管束数目多且维管束面积大的荞麦品种,其茎秆抗折力参数大、倒伏指数小、抗倒伏能力强。
이항도복능력불동적4개교맥품충연구표명,교맥경간항도복능력여경간해부결구화목질소대사밀절상관。도복솔여경간항절력삼수(r=-0.907, P<0.01)、목질소함량(r=-0.844, P<0.01)、궤계조직후도(r=-0.881, P<0.01)、경벽후도(r=-0.947, P<0.01)、유관속면적(r=-0.846, P<0.01)、궤계조직층수(r=-0.806, P<0.05)화대유관속수목(r=-0.709, P<0.05)정현저부상관,이여도복지수(r=0.842, P<0.01)정현저정상관。목질소함량여분병안산해안매(PAL)활성(r =0.984, P <0.01)、4-향두산：CoA련접매(4CL)활성(r =0.927, P <0.01)화육계순탈경매(CAD)활성(r =0.862, P<0.01)정현저정상관。경간목질소함량、궤계조직층수、궤계조직후도、경벽후도、대유관속수목화유관속면적가이작위교맥경간항도복능력적중요평개지표。경간목질소함량고、궤계조직층수다、궤계조직화경벽후、대유관속수목다차유관속면적대적교맥품충,기경간항절력삼수대、도복지수소、항도복능력강。
Lodging is a major problem in buckwheat (Fagopyrum esculentum Moench) production. In this study, we investigated the relationship between anatomical structure together with lignin metabolism and lodging resistance. The results indicated that the lodging resistance of culm in buckwheat was closely related to the anatomical structure and lignin metabolism of culm. The lodging percentage was negatively correlated with snapping resistance parameter of culm (r=-0.907, P<0.01), lignin content (r=-0.844, P<0.01), mechanical tissue thickness (r=-0.881, P<0.01), culm wall thickness (r=-0.947, P<0.01), vascular bun-dle area (r=-0.846, P<0.01), mechanical tissue layer number (r=-0.806, P<0.05), and large vascular bundle number (r=-0.709, P<0.05), but positively correlated with lodging index (r=0.842, P<0.01). The lignin content was positively correlated with activities of phenylalanine ammonialyase (r=0.984, P<0.01), 4-coumarate:CoA ligase (r=0.927, P<0.01), and cinnamyl alcohol dehydrogenase (r=0.862, P<0.01). Therefore, lignin content in culm, mechanical tissue layer number, mechanical tissue thickness, culm wall thickness, large vascular bundle number, and vascular bundle area can be used as main indicators to evaluate lodging resistance in buckwheat. Buckwheat cultivars with high resistance to culm snapping and lodging usually have high lignin content, large number of mechanical tissue layer, and large number of vascular bundle, and thick mechanical tissue and culm wall, and large vascular bundle area.