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Germination characteristics among different sheepgrass (Leymus chinensis) germplasm during the seed development and after-ripening stages

文献类型：期刊论文

作者Yang, Weiguang2,3; Liu, Shu2; Yuan, Guangxiao2; Liu, Panpan2; Qi, Dongmei; Dong, Xiaobing; Liu, Hui; Liu, Gongshe; Li, Xiaoxia
刊名PEERJ
出版日期2019
卷号7
关键词Sheepgrass Seed development After-ripening Seed germination Germplasm
ISSN号2167-8359
DOI10.7717/peerj.6688
文献子类Article
英文摘要Sheepgrass (Leymus chinensis (Trip.) Tzvel) is an important forage grass in the Eurasian steppe. However, little information is available concerning its seed morphological features and germination characteristics during seed development and after-ripening among different germplasm. To clarify the appropriate seed harvest time and the effects of germplasm, seed development and after-ripening on seed germination, 20 germplasm of sheepgrass were selected. Moreover, the seed morphological and physical changes as well as the seed germination and dormancy characteristics of sheepgrass during seed development stages were analyzed using a seven-d gradient of day after pollination (DAP). The results indicated that the seed water content decreased significantly during 35-42 DAP and that the highest seed germination rate of most germplasm was observed at 35-42 DAP. Thus, 35-42 DAP may be the best time to harvest sheepgrass to obtain the maximum seed germination rate and avoid seed shattering. Furthermore, our results indicated that there were six types of germination patterns, including germplasm with increasing germination rates in the developing seed, such as S19 and S13, and germplasm that maintained a consistently low germination rate, such as S10. Moreover, we compared the seed germination rate of eight germplasm during seed development in both 2016 and 2017, and the results indicated that the seed germination patterns of the eight germplasm were highly consistent between the two consecutive years, suggesting that germplasm rather than year is the major factor in determining germination during seed development. The effect of after-ripening on seed germination was different among the germplasm where four types of germination patterns were revealed for 10 germplasm and resulted in various dormancy features. A two-factor ANOVA analysis suggested that the germplasm of the sheepgrass has a large influence on seed germination, whether during seed development or after-ripening. Thus, these findings lay the foundation for future studies on seed dormancy and germination and may guide the breeding of new cultivars of sheepgrass with better germination performance.
学科主题Multidisciplinary Sciences
出版地LONDON
WOS关键词TEMPERATURE ; DORMANCY ; MATURATION ; ENDOSPERMS ; NETWORKS ; TRAITS
WOS研究方向Science & Technology - Other Topics
语种英语
WOS记录号WOS:000463984300003
出版者PEERJ INC
资助机构Science and Technology Major Project of Inner Mongolia Autonomous Region of China ; National Key R&D Program of China [2018 YFD1001003, 2016YFC0500704]
源URL[http://ir.ibcas.ac.cn/handle/2S10CLM1/19525]  
专题中科院北方资源植物重点实验室
作者单位1.Inst Anim Sci Heilongjiang Prov, Qiqihar, Peoples R China
2.Chinese Acad Sci, Inst Bot, Key Lab Plant Resources, Beijing, Peoples R China
3.Univ Chinese Acad Sci, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Yang, Weiguang,Liu, Shu,Yuan, Guangxiao,et al. Germination characteristics among different sheepgrass (Leymus chinensis) germplasm during the seed development and after-ripening stages[J]. PEERJ,2019,7.
APA Yang, Weiguang.,Liu, Shu.,Yuan, Guangxiao.,Liu, Panpan.,Qi, Dongmei.,...&Li, Xiaoxia.(2019).Germination characteristics among different sheepgrass (Leymus chinensis) germplasm during the seed development and after-ripening stages.PEERJ,7.
MLA Yang, Weiguang,et al."Germination characteristics among different sheepgrass (Leymus chinensis) germplasm during the seed development and after-ripening stages".PEERJ 7(2019).

入库方式： OAI收割

来源：植物研究所

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