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根系在甜菜生育过程中起着特殊的作用。它不仅从土壤中吸取营养物质和水分,而且根系为营养物质的重要代谢器官。实践表明,甜菜的越冬情况、产量的高低,与苗期根的形态特征紧密相关、本文以甜研301母本作为供试材料,于1988～1990年在农场试验田进行了采种甜菜维管束环形特征观察。具体方法为,在甜菜苗期的每个叶龄期,分次取样50株,观察其块根形态,测定其维管束环数、鲜重和株高。块根的分化是伴随着叶片的生长同步发生的。2叶期块根的第一维管束环已经形成,第
Roots play a special role in the growth of sugar beet. It not only draws nutrients and water from the soil, but also the root is an important metabolic organ of nutrients. Practice has shown that the over-wintering situation of beet, the level of yield is closely related to the morphological characteristics of seedling root. In this paper, sweet female 301 as a test material, in 1988 to 1990 in the field trial of sugar beet tube bundle characteristics Observed. The specific method was as follows: In each leaf stage of sugar beet seedlings, 50 plants were sampled in different stages to observe the root morphology of the roots, and determine the number of vascular bundles, fresh weight and plant height. The differentiation of tuberous roots occurs synchronously with the growth of the leaves. The first vascular ring of 2 leaf stage roots has been formed, the first