干旱区生态环境知识资源中心(Arid): Low soil temperature reducing the yield of drip irrigated rice in arid area by influencing anther development and pollination

Arid

DOI	10.1007/s40333-019-0103-9
	Low soil temperature reducing the yield of drip irrigated rice in arid area by influencing anther development and pollination
	Zhang, Jun 1,2; Dong, Peng 3; Zhang, Haoyu 1; Meng, Chaoran 1; Zhang, Xinjiang 1; Hou, Jianwei 1; Wei, Changzhou 1
通讯作者	Wei, Changzhou
来源期刊	JOURNAL OF ARID LAND
ISSN	1674-6767
EISSN	2194-7783
出版年	2019
卷号	11 期号:3 页码:419-430
英文摘要	Drip irrigation can produce high rice yields with significant water savings; therefore, it is widely used in arid area water-scarce northern China. However, high-frequency irrigation of drip irrigation with low temperature well water leads to low root zone temperature and significantly reduce the rice yield compared to normal temperature water irrigated rice, for example, reservoir water. The main purpose of this paper is to investigate the effects of low soil temperature on the yield reduction of drip irrigated rice in the spike differentiation stage. The experiment set the soil temperatures at 18 degrees C, 24 degrees C and 30 degrees C under two irrigation methods (flood and drip irrigation), respectively. The results showed that, at the 30 degrees C soil temperature, drip irrigation increased total root length by 53% but reduced root water conductivity by 9% compared with flood irrigation. Drip irrigation also increased leaf abscisic acid and proline concentrations by 13% and 5%, respectively. These results indicated that drip irrigated rice was under mild water stress. In the 18 degrees C soil temperature, drip irrigation reduced hydraulic conductivity by 58%, leaf water potential by 40% and leaf net photosynthesis by 25% compared with flood irrigation. The starch concentration in male gametes was also 30% less in the drip irrigation treatment than in the flood irrigation treatment at soil temperature 18 degrees C. Therefore, the main reason for the yield reduction of drip irrigated rice was that the low temperature aggravates the physiological drought of rice and leads to the decrease of starch content in male gametes and low pollination fertilization rate. Low temperature aggravates physiological water deficit in drip irrigated rice and leads to lower starch content in male gametes and low pollination fertilization rate, which is the main reason for the reduced yield of drip irrigated rice. Overall, the results indicated that the low soil temperatures aggravated the water stress that rice was under in the drip irrigated environment, causing declines both in the starch content of male gametes and in pollination rate. Low temperature will ultimately affect the rice yield under drip irrigation.
英文关键词	soil temperature drip irrigation root hydraulic conductivity starch concentration rice yield arid area
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000474563200008
WOS关键词	ROOT-ZONE TEMPERATURES ; GROWTH ; ACID ; STRESS ; PLANTS
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/216786
作者单位	1.Shihezi Univ, Key Lab Oasis Ecol Agr Xinjiang Prod & Construct, Shihezi 832000, Peoples R China; 2.Nanyang Normal Univ, Collaborat Innovat Ctr Water Secur Water Source R, Nanyang 473061, Peoples R China; 3.Nanyang Acad Agr Sci, Nanyang 473083, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Jun,Dong, Peng,Zhang, Haoyu,et al. Low soil temperature reducing the yield of drip irrigated rice in arid area by influencing anther development and pollination[J],2019,11(3):419-430.
APA	Zhang, Jun.,Dong, Peng.,Zhang, Haoyu.,Meng, Chaoran.,Zhang, Xinjiang.,...&Wei, Changzhou.(2019).Low soil temperature reducing the yield of drip irrigated rice in arid area by influencing anther development and pollination.JOURNAL OF ARID LAND,11(3),419-430.
MLA	Zhang, Jun,et al."Low soil temperature reducing the yield of drip irrigated rice in arid area by influencing anther development and pollination".JOURNAL OF ARID LAND 11.3(2019):419-430.