Premium
Changes in abscisic acid and proline levels in maize varieties of different drought resistance
Author(s) -
Ilahi Ihsan,
Dörffling Karl
Publication year - 1982
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1982.tb02275.x
Subject(s) - proline , abscisic acid , drought resistance , drought stress , biology , horticulture , drought tolerance , botany , water stress , agronomy , amino acid , biochemistry , gene
Four varieties of maize differing in drought resistance and geographical origin (Swabi White and Shaheen from Pakistan, Garbo and Goldprinz from Germany) were analyzed for their proline and abscisic acid (ABA) accumulation during a prolonged water stress period. Proline levels increased continuously during the stress period in all the four varieties, but to different amounts. The drought‐susceptible varieties Shaheen and Goldprinz produced higher levels of proline than the drought‐resistant varieties Swabi White and Garbo. A negative correlation was also found between maximal ABA contents and degree of drought resistance during prolonged stress of younger plants. ABA levels did not increase steadily, but reached a maximum long before the end of the stress phase, and then declined. The results are discussed in relation to the possibility of using proline and ABA levels as biochemical indicators of resistance against drought.