薤(藠头)生长动态与分蘖观察

Observation on Growth Dynamics and Tillering of Allium chinensis

为探究薤生长发育与分蘖规律,以江西地方品种生米藠头为试材开展了薤生长动态及其分蘖的观察研究。结果表明:薤植株鲜质量、根鲜质量、鳞茎鲜质量和叶鲜质量及株高、叶数、根数、最大叶长等均随生长进程逐步增加,呈单峰曲线的增长动态,且均在鳞茎膨大期增长最快。薤分蘖发生于鳞茎膨大期,一般行3～4级分蘖,分蘖数(X)与分蘖级数(n)的关系为:X=2n。薤鳞茎鲜质量与单株叶数、叶鲜质量和分蘖数呈显著正相关,与单株根数、根鲜质量和植株鲜质量呈极显著正相关。

To study the growth rule and tillering regularity of Allium chinensis, the growth dynamics experiment with local variety ＇ Shengmijiaotou＇ was performed in Jiangxi Province. The results showed that the fresh mass of plant, roots, bulb and leaves, the plant height, leaf and root numbers, and the length of the biggest leaf, etc. all gradually increased along with its growth, showing a growth dynamics with a single peak curve, and the increasing speed of the aforementioned items were the highest at the bulb growth stage. Tillering of 3-4 grades begun at the bulb growth stage, and the relationship between tillers number in one piece of bulb （X） and tillering grades （ n ） was X=2^n. The fresh mass of bulb had significant positive correlation with leaf numbers per plant, leaves fresh mass and tillers number, had very significant positive correlation with root numbers per plant, roots fresh mass and plant fresh mass.