干旱区生态环境知识资源中心(Arid): Reaction of some rapeseed (Brassica napus L.) genotypes to different drought stress levels during germination and seedling growth stages

Arid

DOI	10.1051/ocl/2019020
	Reaction of some rapeseed (Brassica napus L.) genotypes to different drought stress levels during germination and seedling growth stages
	Channaoui, Souhail; El Idrissi, Imane Saghouri; Mazouz, Hamid; Nabloussi, Abdelghani
通讯作者	Nabloussi, A
来源期刊	OCL-OILSEEDS AND FATS CROPS AND LIPIDS
ISSN	2272-6977
EISSN	2257-6614
出版年	2019
卷号	26
英文摘要	Drought is a major abiotic stress that affects seed germination and plant growth in arid and semi-arid regions. Rapeseed is an oilseed crop adapted to Mediterranean area; however, it is reported that it is sensitive to water stress occurring during seed germination. In this study, we investigated how seed germination and early seedling growth of six rapeseed genotypes were influenced by different water stress levels. In addition to the control (absence of drought stress), three drought levels were simulated using three osmotic potentials of polyethylene glycol (PEG-6000), -9, 10 and 11 bars. A completely randomized design with three replications was used for this experiment. Germination percentage (GP), shoot length (SL), root length (RL), shoot elongation rate (SER) and root elongation rate (RER) were determined to evaluate the genotypes response to PEG-induced drought stress. Results showed drought stress, genotype and interaction stress x genotype had a significant effect on the studied parameters. GP decreased with the increase in stress level. The genotype 'Nap9' was the most interesting, having the highest GP values, namely 63.33, 62.67 and 28% under the stress levels -9, 10 and 11 bars, respectively. The genotype 'H2M-5', which ranked second with respect to this parameter, was statistically comparable to 'Nap9'. Also, SL, RL, SER and RER decreased with the increase in drought stress level. However, the studied genotypes reacted differently to various water stress levels. Once again, the genotype 'H2M-5' exhibited the highest average RL and RER under all drought levels. Particularly, for severe drought conditions (-11 bars), `H2M-5' had an average RL of 1.54 cm and RER of 0.36 cm/d. Field evaluation under controlled conditions is needed to confirm findings of the present experiment. The mutant 'H2M-5' could be a valuable and promising germplasm for developing a performant and adapted variety to be designed for harsh environments particularly characterized by early drought coinciding with germination and seedling growth stages.
英文关键词	drought osmotic potential rapeseed mutant seed germination seedling growth
类型	Article
语种	英语
开放获取类型	DOAJ Gold
收录类别	ESCI
WOS记录号	WOS:000466894100001
WOS关键词	WATER-STRESS ; SALT STRESSES ; ROOT-GROWTH ; SALINITY ; SEEDS ; TOLERANCE ; EMERGENCE
WOS类目	Agronomy
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/333526
作者单位	[Channaoui, Souhail; Nabloussi, Abdelghani] Reg Agr Res Ctr Meknes, Natl Inst Agr Res, Res Unit Plant Breeding & Plant Genet Resources C, Meknes, Morocco; [Channaoui, Souhail; Mazouz, Hamid] Univ Moulay Ismail, Fac Sci, Dept Biol, Lab Plant Biotechnol & Mol Biol, Meknes, Morocco; [El Idrissi, Imane Saghouri] Univ Ibn Tofail, Fac Sci, Dept Biol, Lab Biodivers & Nat Resources, Kenitra, Morocco
推荐引用方式 GB/T 7714	Channaoui, Souhail,El Idrissi, Imane Saghouri,Mazouz, Hamid,et al. Reaction of some rapeseed (Brassica napus L.) genotypes to different drought stress levels during germination and seedling growth stages[J],2019,26.
APA	Channaoui, Souhail,El Idrissi, Imane Saghouri,Mazouz, Hamid,&Nabloussi, Abdelghani.(2019).Reaction of some rapeseed (Brassica napus L.) genotypes to different drought stress levels during germination and seedling growth stages.OCL-OILSEEDS AND FATS CROPS AND LIPIDS,26.
MLA	Channaoui, Souhail,et al."Reaction of some rapeseed (Brassica napus L.) genotypes to different drought stress levels during germination and seedling growth stages".OCL-OILSEEDS AND FATS CROPS AND LIPIDS 26(2019).