干旱区生态环境知识资源中心(Arid): Effect of maturation conditions on light and temperature requirements during seed germination of Citrullus colocynthis from the Arabian Desert

Arid

DOI	10.1111/plb.12923
	Effect of maturation conditions on light and temperature requirements during seed germination of Citrullus colocynthis from the Arabian Desert
	El-Keblawy, A.1; Soliman, S.2; Al-Khoury, R.3; Ghauri, A.3; Al Rammah, H.3; Hussain, S. E.3; Rashid, S.3; Manzoor, Z.3
通讯作者	El-Keblawy, A.
来源期刊	PLANT BIOLOGY
ISSN	1435-8603
EISSN	1438-8677
出版年	2019
卷号	21 期号:2 页码:292-299
英文摘要	Seed germination of Citrullus colocynthis, as in many other species of Cucurbitaceae, is inhibited by light, particularly at low temperatures. Germination response to light and temperature has been attributed to day length and temperature during seed maturation. This study assessed the effects of these factors on the germination response of C. colocynthis to temperature and light quality. Ripe fruits were collected from natural habitats during December and February and germinated at three temperatures (15/25, 20/30 and 25/35 degrees C) in five light treatments (dark, white light and Red:Far Red (R:FR) ratios of 0.30, 0.87 and 1.19). Additionally, unripe fruits were also collected from natural habitats and completed their maturation in growth chambers under different day lengths (6, 16 and 24 h of darkness) at 10/20 degrees C, and in darkness at both 10/20 degrees C and 25/35 degrees C. Mature seeds of the different treatments were germinated in the same five light treatments at 15/25 degrees C. Germination was significantly higher in the dark than that in any light treatment. Seeds matured at higher temperatures (i.e. seeds from the December collection and those matured at 25/35 degrees C) had significantly higher germination than those matured at lower temperatures (i.e. seeds from the February collection and those matured at 10/20 degrees C). Dark germination was significantly higher for the December collection than for the February collection. Seeds of the two collections germinated in the dark only at 15/25 degrees C. However, seeds matured in a growth chamber at 10/20 degrees C in darkness germinated at 15/25 degrees C in all light treatments, except for the R:FR ratio 0.30. Seeds of the different treatments failed to germinate in FR-rich light. This study demonstrates that both temperature and day length during seed maturation play significant roles in the germination response of C. colocynthis. Additionally, the dark requirement for germination is likely beneficial for species with the larger seeds, such as C. colocynthis, which produce bigger seedlings that are able to emerge from deep soils and are competitively superior under dense vegetation and resource-limited conditions.
英文关键词	Cucurbitaceae germination requirements light quality maternal temperature maternal light seed dormancy
类型	Article
语种	英语
国家	Egypt ; U Arab Emirates
收录类别	SCI-E
WOS记录号	WOS:000458354000012
WOS关键词	MELON CUCUMIS-MELO ; PHYTOCHROME ; RESPONSES ; PLANT ; ANNUALS ; ARABIDOPSIS ; DORMANCY ; SIZE ; CUES ; MASS
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/218008
作者单位	1.Al Arish Univ, Dept Biol, Fac Sci, Al Arish, Egypt; 2.Univ Sharjah, Dept Med Chem, Coll Pharm, Sharjah, U Arab Emirates; 3.Univ Sharjah, Dept Appl Biol, Fac Sci, POB 27272, Sharjah, U Arab Emirates
推荐引用方式 GB/T 7714	El-Keblawy, A.,Soliman, S.,Al-Khoury, R.,et al. Effect of maturation conditions on light and temperature requirements during seed germination of Citrullus colocynthis from the Arabian Desert[J],2019,21(2):292-299.
APA	El-Keblawy, A..,Soliman, S..,Al-Khoury, R..,Ghauri, A..,Al Rammah, H..,...&Manzoor, Z..(2019).Effect of maturation conditions on light and temperature requirements during seed germination of Citrullus colocynthis from the Arabian Desert.PLANT BIOLOGY,21(2),292-299.
MLA	El-Keblawy, A.,et al."Effect of maturation conditions on light and temperature requirements during seed germination of Citrullus colocynthis from the Arabian Desert".PLANT BIOLOGY 21.2(2019):292-299.