共查询到19条相似文献,搜索用时 714 毫秒
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蔬菜作物中富含多种具有调节人体新陈代谢、提高免疫力、预防慢性疾病以及防癌抗癌等生物学功能的活性物质。光照是影响蔬菜作物生长发育的重要环境因子之一,同时也是参与调控植物体内各种生物活性物质合成与代谢的重要因子。综述了LED光质及比例对蔬菜作物体内酚类化合物、类胡萝卜素、萝卜硫苷、维生素C等活性物质合成代谢的影响,并简要概括了光质调控上述活性物质的分子机制。该综述不仅可为蔬菜作物生物活性物质的光质调控提供理论参考,也可为LED光质调控高品质蔬菜作物的生产提供理论支撑和技术支持。 相似文献
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《中国瓜菜》2020,(8)
瓜类蔬菜是重要的蔬菜种类,广泛种植于世界各地。瓜类蔬菜多为蔓生作物,生产中通过设立支架提高产品的产量与品质。近年来,随着分子生物学的快速发展和基因工程技术的深入研究,对作物矮生性状及其相关基因的研究也愈加深入,应用基因工程技术对作物株高进行遗传改良已成为提高作物产量的有效途径,培育合理株型已成为作物育种的重要目标。矮生性状作为瓜类蔬菜育种中的一个重要的结构性状,也是当前瓜类蔬菜育种工作的热点。笔者综述了瓜类蔬菜矮生性状的遗传学研究进展,特别是黄瓜、西瓜、南瓜和甜瓜等主要瓜类蔬菜矮生性状相关基因的遗传学分析、基因定位以及基因克隆等方面的研究进展,并对瓜类蔬菜矮生性状在作物分子育种中的应用和发展趋势进行了展望。 相似文献
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钙是蔬菜作物生长发育不可缺少的一种重要元素,而且绝大多数蔬菜都喜钙.在钙不足的情况下,会引起作物生理失调,植株生长受阻,果菜类不结实或很少结实等,或者是导致其他生理病害的发生,严重地影响了蔬菜的生长.在近几年的调查中发现,不仅露地栽培蔬菜缺钙,保护地中蔬菜缺钙现象更为严重.为此,笔者对蔬菜缺钙的发生与防治展开研究,基本摸清了其发生的原因及防治技术,在生产上取得较好的效果. 相似文献
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Vegetables play an important role in human nutrition and health. Cultivation of vegetable crops is an integral part of the agricultural economy of many developing countries. Vegetable crop productivity and quality are seriously affected by several biotic and abiotic stresses, which destabilize rural economies in many countries. Moreover, absence of proper post-harvest storage and processing facilities leads to qualitative and quantitative losses. In the past four decades, conventional breeding has contributed significantly for the improvement of vegetable yields, quality, post-harvest life, and resistance to biotic and abiotic stresses. However, there are many constraints in conventional breeding, which can only be overcome by advancements made in modern biology. In the last decade various traits such as biotic stress resistance, quality and storage life have been successfully engineered into vegetable crops and some of them have been commercialized. In recent years significant progress has been made to manipulate vegetable crops for abiotic stress tolerance, quality improvement and pharmaceutical and industrial applications. Although the progress in commercialization of transgenic vegetable crops has been relatively slow, transgenic vegetables engineered for nutraceutical and pharmaceutical use will contribute significantly to the value added agriculture in near future. 相似文献
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Kiran Khandagale Suresh Gawande 《The Journal of Horticultural Science and Biotechnology》2019,94(4):522-532
Onion (Allium cepa L.) is one of the most important vegetable crops due to its diverse culinary and health promoting properties. It is a rich source of dietary phytochemicals such as flavonoids and other antioxidants which enhance the medicinal importance of onion. Onion bulb colour is one of the important quality characters actively targeted in breeding programmes. Onion bulbs with red, white, yellow, golden, pink, chartreuse, etc. colour are available and this variation is due to the mutations in structural and regulatory genes of the flavonoid biosynthesis pathway. The genetics of bulb colour variation is very complex and involves multiple genes and their interactions. Further, these flavonoid compounds and their derivatives play diverse roles in plant development and stress tolerance in plants. Here, we review the biosynthesis of flavonoids, genetics and multiple alleles of genes for onion bulb colour, metabolic engineering, flavonoid in biotic and abiotic stress response and effect of cultural and storage practices on onion flavonoids. 相似文献