摘要
以抗倒性不同的15个高产小麦品种(系)为材料,据其不同时期茎秆机械强度的大小,应用系统聚类法将品种划分为特优型、优质型、中间型和劣质型四种茎秆质量类型,并在不同时期对四种类型的基部第二节间进行了解剖学研究。结果表明,茎秆质量好的,其机械组织细胞层数多,细胞壁增厚快、木质化程度高,机械组织发达;大维管束长且宽,数量多;薄壁组织木质化速度快、程度高、范围大;纤维细胞短而粗;秆壁较厚,髓腔大小适中。
Fifteen high-yielding wheat varieties were investigated and divided into four
types by systematic cluster analysis based on the differences of their culm mechanics strength at
different stages. Anatomical structures were studied in the 2nd basal internodes of the four
types. The results indicated that for good quality culm, the mechanical tissue had more cell layers
and the wall of cell thickened quickly; the large vascular bundles tended longer, wider and had
more numbers; the thin-walled tissue lignified quickly and greatly; the fiber cell was shorter and
thicker; the wall of culm was thicker and the size of medullary cavity was moderate.
出处
《作物学报》
CAS
CSCD
北大核心
1998年第4期452-458,共7页
Acta Agronomica Sinica
关键词
小麦
茎秆质量
分类
解剖
品种
Wheat
Culm quality
Classification
Anatomy
