Field Studies on the Drought Resistance of Triticale wittmack ‘Gannong No.1’
To investigate the field drought resistance of Triticale wittmack ‘ Gannong No.1’, two varieties of triticale (‘ Shida No.1 ’ (CK1) and ‘ Zhongsi 1048’ (CK2)) were used as control materials.The soil water content and physiological and biochemical indexes were measured after different days of drought stress,which would provide reference information for planting it in the rain fed farming area of northwest China.At the tillering stage of triticale, the soil water content, the contents of soluble sugar, proline (Pro), malondialdehyde (MDA), and the activities of peroxidase (POD), superoxide dismutase (SOD) and catalase (CAT) in the leaves were measured at 7, 14, 21, 28, 35 and 42 days (the plants began to wilting) after drought stress by controlling water in rain-proof shelter.The result showed that except for MDA content,there were significant differences in soluble sugar, Pro, POD, SOD and CAT among varieties, drought stress days and interaction between them (P<0.01).These findings suggest that the drought resistance of three varieties decreased in the order:‘Gannong No.1’ >CK2>CK1, so ‘Gannong No.1’ belongs to the middle resistant type, CK1 and CK2 belong to the drought sensitive type.
Triticale wittmack ‘Gannong No.1’Physiological and biochemical indexesField drought resistanceEvaluation