黄花补血草形态结构及其生育期研究
Study on the Morphological Structure and Growth Period of Limonium aureum(L.)Hill
王鑫 1金娜 1赵连鑫 1何彩1
作者信息
- 1. 武威市林业科学研究院,甘肃 武威 733000
- 折叠
摘要
通过研究黄花补血草形态结构及物候期表现,掌握其在河西地区的生长发育情况,为黄花补血草人工栽培提供依据.采用显微观察、发芽试验和人工种植的方法对黄花补血草形态结构及其生育期进行了研究.结果表明,黄花补血草花序轴单生或丛出,顶端着生穗状花序.穗状花序上着生小穗 3～5 个,小穗由 3 朵小花组成.小花由花柄和花冠组成,1 朵小花内有 1 粒种子,种子位于漏斗状花冠内部.黄花补血草种子千粒重为0.687 g,种子由胚、胚乳和种皮组成,为有胚乳双子叶种子;种子吸水量为干种子重量的 69.0%,1～2 h内吸水最快;种子发芽率为 96.0%,发芽势为 57.7%.种植当年即能开花结实,但营养生长期长于第 2 年.表明黄花补血草种子为有胚乳双子叶种子,种子 8h吸水饱和,吸水后即萌动,无休眠,当年种植即能开花结实.
Abstract
In order to clarify the morphological structure and growth period of Limonium aureum so as to master its growth and development in the Hexi region,and provide a basis for its artificial cultivation,experimental studies were conducted using microscopic observation,germination experiments,and artificial planting methods.The results indicate that the inflorescence axis of Limonium aureum is single or clustered,and the top is accompanied by a spike like inflorescence.On the spike like inflorescence,there are 3 to 5 spikelets,which are composed of 3 small flowers.A small flower consists of a stem and a corolla.Each small flower contains one seed,which is located inside a funnel-shaped corolla.The thousand-seed weight of Limonium aureum is 0.687g,and the seed is composed of embryo,endosperm,and seed coat.It is a dicotyledonous seed with endosperm.The water absorption capacity of Limonium aureum seeds is 69.0% of the weight of dry seeds,and the fastest water absorption occurs within 1 to 2 hours.The germination rate and germination potential of Limonium aureum seeds are 96.0% and 57.7%,respectively.It can bloom and bear fruit in the first year of planting,but the nutritional growth period is longer than the second year.This study indicates that the seeds of Limonium aureum are dicotyledonous seeds with endosperm.After 8 hours of water absorption,the seeds are saturated and begin to sprout without dormancy.They can bloom and bear fruit when planted that year.
关键词
黄花补血草/形态结构/种子/花/物候期Key words
Limonium aureum/Morphological structure/Seed/Flower/Phenological period引用本文复制引用
基金项目
甘肃省林业科技项目(2018kj024)
甘肃省第二批陇原青年英才项目(2023)()
出版年
2024
国家科技期刊平台
NSTL
万方数据