Response to high temperature of Cleistogenes songorica seed dormancy from different positions

Abstract

Abstract: A series of laboratory tests were conducted with Cleistogenes songorica to study the effect of high temperature on seed dormancy release at different positions. The responses of seed dormancy release and seedling growth to 18 h high temperature (65, 85, 105℃) differed. All seeds were killed at 105℃ whereas 85℃ treatment broke seed dormancy and promoted seedling growth. The effect of 65℃ treatment varied with the position on the flower spike. Reponses of seed dormancy release at different positions to the 85℃ treatment differed with the treatment duration and a 3 h treatment significantly broke seed dormancy. Germination rate, plumule length, and radicle length of seeds on the top of spikes were significantly lower than those in the internodes.

CLC Number:

WEI Xue, WANG Yan-rong, HU Xiao-wen, WU Yan-pei. Response to high temperature of Cleistogenes songorica seed dormancy from different positions[J]. Acta Prataculturae Sinica, 2009, 18(6): 169-173.

References

[1] Baskin J M, Davis B H, Baskin C C, et al. Physical dormancy in seeds of Dodonaea viscosa (Sapindales, Sapindaceae) from Hawaii[J]. Seed Science Research, 2004, 14: 81-90.
[2] Nancy V, Aleta M. Testing native species with deep dormancy[J]. Seed Technology, 2002, 24(1): 43-51.
[3] 杨期和, 叶万辉, 宋松泉, 等. 植物种子休眠的原因及休眠的多形性[J]. 西北植物学报, 2003, 23(5): 837-843.
[4] 陈默君, 贾慎修.中国饲用植物志[M].北京: 中国农业出版社, 2002.
[5] 周志宇.阿拉善荒漠草地类初级营养类型研究[M].兰州: 甘肃科学技术出版社, 1990.
[6] 郇庚年.甘肃张掖重要野生草坪植物[J].草业科学, 1989, 6(5): 60-64.
[7] 闫玉春, 唐海萍.草地退化相关概念辨析[J].草业学报, 2008, 17(1): 93-99.
[8] 黄黔. 我国的生态建设与生态现代化[J]. 草业学报, 2008, 17(2): 1-8.
[9] 孙建华, 王彦荣, 曾彦军. 封育和放牧条件下退化荒漠草地土壤种子库特征[J]. 西北植物学报, 2005, 25(10): 2035-2042.
[10] 鱼小军, 王彦荣, 曾彦军, 等. 温度和水分对无芒隐子草和条叶车前种子萌发的影响[J]. 生态学报, 2004, 24(5): 883-887.
[11] 鱼小军, 王彦荣, 张建全, 等. 无芒隐子草和条叶车前种子破除休眠研究[J]. 草业学报, 2004, 13(6): 45-49.
[12] 中国科学院北京植物研究所主编. 中国高等植物图鉴(第五册)[M]. 北京: 科学出版社, 1976.
[13] 曾彦军. 放牧和封育对红砂和无芒隐子草种群繁殖的影响[D]. 兰州: 兰州大学, 2005.
[14] 焦树英, 韩国栋, 李永强, 等. 不同载畜率对荒漠草原群落结构和功能群生产力的影响[J]. 西北植物学报, 2006, 26(3): 564-571.
[15] 武艳培, 王彦荣, 胡小文, 等. 围栏封育对无芒隐子草非结构性碳水化合物的影响[J]. 西北植物学报, 2007, 27(11): 2298-2305.
[16] 邰建辉, 王彦荣, 陈谷. 无芒隐子草种子萌发、出苗和幼苗生长对土壤水分的响应[J]. 草业学报, 2008, 17(3): 105-110.
[17] 邰建辉. 无芒隐子草建植与种子生产技术研究[D]. 兰州: 兰州大学, 2007.
[18] 李孟良. 油菜不同部位粒重差异及种子活力研究[J]. 中国农学通报, 2007, 23(6): 284-287.
[19] 李孟良, 时侠清. 小麦不同粒位、粒重及其种子活力研究[J]. 中国农学通报, 2001, 17(1): 14-16.
[20] 国家质量技术监督局. 牧草种子检验规程GB/T2930.4-2001[S]. 北京: 中国标准出版社, 2001.
[21] Koller D. Germination-regulating mechanisms in desert seeds Ш[J]. Ecology, 1956, 37: 430-433.
[22] 李蓉, 叶勇. 种子休眠与破眠机理研究进展[J]. 西北植物学报, 2005, 25(11): 2350-2355.
[23] 颜启传. 种子学[M]. 北京: 中国农业出版社, 2001.
[24] Tieu C A, Dixon K W, Meney K A, et al. The interaction of heat and smoke in the release of seed dormancy in seven species from southwestern Western Australia[J]. Annals of Botany, 2001,88: 259-265.
[25] 聂朝相, 宋淑明, 申斯迎, 等. 结缕草种子预处理反应与耐藏性的探讨[J]. 草业科学, 1993, 10(1): 27-54.
[26] 韩建国. 牧草种子学[M]. 北京: 中国农业大学出版社, 2000.
[27] 鱼小军, 王芳, 龙瑞军.破除种子休眠方法研究进展[J]. 种子, 2005, 24(7): 46-49.
[28] 傅强, 杨期和, 叶万辉. 种子休眠的解除方法[J]. 广西农业生物科学, 2003, 22(3): 230-234.
[29] Vleeshouwers L M, Bouwmeester H J. A simulation model for seasonal changes in dormancy and germination of weed seeds[J]. Seed Science Research, 2001, (11): 77-92.
[30] 比尤利 J D, 布莱克 M. 种子萌发的生理生化(第二卷): 生活力、休眠与环境控制[M]. 南京: 东南大学出版社, 1989.
[31] Thompson P A. Germination of Lycopus europaeus in response to fluctuating temperatures and light[J]. Journal of Experimental Botany, 1969, (20): 1-11.