CAJ | 학술논문

小麦(Triticum aestivum L.)新品种"小偃81",是由抗病虫害小麦品种"小偃54"和高产小麦品种"8602"杂交筛选出的具有优良特性的后代.作者运用多种实验手段,研究了新品种茎秆组织结构以及木质素含量和分布的变化规律.结果表明:与母本"小偃54"和父本"8602"相比,"小偃81"的茎秆直径变小、横切面上维管束数目减少,而茎秆直径与壁厚比、横切面上机械组织比例却显著增大,单位面积上维管束数目增多.Klason法测定木质素结果显示:"小偃81"茎秆中木质素含量高于"小偃54"和"8602".经Maule和Wiesner的木质素显色反应,"小偃81"茎秆横切面染色明显加深.用H2O2/Hac弃除酚酸以后,新品种小麦的木质素自发荧光明显强于亲本.FTIR分析结果表明:"小偃8l"中所含的紫丁香基、愈创木酚基等木质素特征基团的吸收峰值也显著高于亲本.由此推断,新品种"小偃8l"的茎秆具有优良的组织结构和化学组成.
소맥(Triticum aestivum L.)신품충"소언81",시유항병충해소맥품충"소언54"화고산소맥품충"8602"잡교사선출적구유우량특성적후대.작자운용다충실험수단,연구료신품충경간조직결구이급목질소함량화분포적변화규률.결과표명:여모본"소언54"화부본"8602"상비,"소언81"적경간직경변소、횡절면상유관속수목감소,이경간직경여벽후비、횡절면상궤계조직비례각현저증대,단위면적상유관속수목증다.Klason법측정목질소결과현시:"소언81"경간중목질소함량고우"소언54"화"8602".경Maule화Wiesner적목질소현색반응,"소언81"경간횡절면염색명현가심.용H2O2/Hac기제분산이후,신품충소맥적목질소자발형광명현강우친본.FTIR분석결과표명:"소언8l"중소함적자정향기、유창목분기등목질소특정기단적흡수봉치야현저고우친본.유차추단,신품충"소언8l"적경간구유우량적조직결구화화학조성.
Anatomical studies of the culm of Triticum aestivum L. cv. Xiaoyan 81, a comparatively lodging resistant cultivar, from its maternal parent Xiaoyan 54 and paternal parent 8602, was carried out by means of various microscopic techniques coupled with chemical analysis. It was found that the culm of Xiaoyan 81 possessed shorter diameter, thicker width, higher thickness-diameter ratio and higher percentage of mechanical tissue, comparing with its parents. Furthermore, the lignin content was determined by Klason's method and semi-quantitatively analyzed with confocal laser scanning microscopy (CLSM), histochemical staining, and Fourier transform infrared spectroscopy (FTIR), and the results revealed a much higher lignin content in the culm of Xiaoyan 81 than that in the Xiaoyan 54 and 8602. All of these findings provided anatomical and chemical evidence for a better quality in biomechanics of culm in cv. Xiaoyan 81 than that in its parents.