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首页> 外文期刊>Medicinal Plants >Effect of light quality on seed germination and seedling growth of six medicinal plant species in Tarai region, Uttarakhand
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Effect of light quality on seed germination and seedling growth of six medicinal plant species in Tarai region, Uttarakhand

机译：光质对北阿坎德邦塔莱地区6种药用植物种子的萌发和幼苗生长的影响

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摘要

The influence of light quality (direct light, red, far-red and dark) on seed germination and seedling growth was examined in six different medicinal plant species viz., Lepidium sativum Linn., Spilanthes acmella Linn., Matricaria chamomilla Linn., Ammi majus Linn., Andrographis paniculata Nees. and Cassia tora Linn, in Tarai region of Uttarakhand with three replicates for 15 days under laboratory conditions. The results revealed that the rate of germination and per cent seed germination differ from species to species and light conditions. The per cent seed germination was maximum in/,, sativum (89.67% in far - red) and minimum in M. chamomilla (40.0% in direct). M. chamomilla and S. acmella was failed to germinate under dark condition, whereas L. sativum showed maximum per cent seed germination (62%). The seedling growth in terms of length (cm) and dry weight (mg) of 15 days old was significantly affected by light quality in all the species. All the species exhibited maximum radicle length (cm) under direct light except in S. acmella (6.67 in red light) whereas plumule length (cm) was maximum in C. tora (11.78), L. sativum (8.59), A. paniculata (7.18) and A. majus (5.93) in dark. Interestingly, maximum total seedling dry weight (mg) was under direct light in all the species and it was maximum in C. tora (7.06) and minimum in M. chamomilla (2.80) indicating that direct light is favourable for seedling growth.
机译：在六个不同的药用植物物种中检测了光质量（直接的光，红色，远红色和黑暗）对种子萌发和幼苗生长的影响，这些物种有：亚麻Le（Lepidium sativum Linn），尖兰（Splanthes acmella Linn。），母菊（Matricaria chamomilla Linn。），Ammi majus Linn。，穿心莲。和位于北阿坎德邦塔莱地区的决明子tora Linn，在实验室条件下进行了15天的3次重复测试。结果表明，不同物种和光照条件下的发芽率和种子发芽率不同。种子的发芽率最高的是//茄子（远处为89.67％-红色），最小的是沙门氏菌（发芽率为40.0％）。沙门氏菌和沙门氏菌在黑暗条件下无法发芽，而番茄则显示出最高的种子发芽率（62％）。 15天大的幼苗的长（cm）和干重（mg）的生长受到所有物种光质量的显着影响。除沙门氏菌（S. acmella）（红光为6.67）外，所有物种在直射光下均显示最大胚根长度（cm），而C. tora（11.78），L。sativum（8.59），A。paniculata的胚芽长度（cm）最大。 （7.18）和A. majus（5.93）在黑暗中。有趣的是，在所有物种中，最大总幼苗干重（mg）在直射光下，在C. tora（7.06）中最大，在C. chamomilla（2.80）中最小，表明直接光对幼苗生长有利。

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