Effects of Formulated Fertilizer Synergist on Abscisic Acid Accumulation, Proline Content and Photosynthetic Characteristics of Rice under Drought

• Published in: Rice science Vol. 14; no. 1; pp. 42 - 48
• Main Authors: WANG, Shao-xian, XIA, Shi-tou, PENG, Ke-qin, KUANG, Feng-chun, CAO, Yong, XIAO, Lang-tao
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.03.2007; Changde Cigarette Factory,Changde 415000, China%Key Laboratory of Phytohormones, Hunan Agricultural University, Changsha 410128, China%Key Laboratory of Phytohormones, Hunan Agricultural University, Changsha 410128, China; Key Laboratory of Phytohormones, Hunan Agricultural University, Changsha 410128, China; Key Laboratory of Hunan Forest Product & Chemical Industry Engineering, Jishou University,Zhangjiajie 427000, China
• Subjects: abscisic acid; drought; fertilizer synergist; photosynthetic characteristics; proline; 光合特性; 增效剂; 干旱耐受性; 脯氨酸含量; 脱落酸蓄积; 配方施肥; proline; abscisic acid; fertilizer synergist; drought; photosynthetic characteristics
• ISSN: 1672-6308; 1876-4762
• DOI: 10.1016/S1672-6308(07)60007-9

To investigate the effects of formulated fertilizer synergist on the drought tolerance in rice, pot experiment was conducted to analyze the photosynthetic characteristics and the accumulation of abscisic acid （ABA） and proline in middle-season rice variety Peiliangyou 93. The synergist could improve the net photosynthetic rate, and coordination between the water loss and the CO2 absorption as well as reduce the harmful effect on photosynthetic process under drought conditions. Under drought, the ABA accumulated massively both in roots and leaves, while the ABA content in roots was far higher than that in leaves. The results indicate that synergist could increase the ABA accumulation, but reduce the proline accumulation in rice plant under drought.