基于生理生化指标8份饲用小黑麦品种（系）抗旱性评价

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中图分类号：S544.9 文献标识码：A 文章编号：1007-0435（2025）07-2238-11

引用格式：.基于生理生化指标8份饲用小黑麦品种（系）抗旱性评价[J].草地学报，2025，33（7）：2238- 2248 CHENYu，CHU Hong-li，DU Wen-hua.Drought Resistance Evaluationof 8Forage TriticaleVarieties （Lines） Based on Physiological and Biochemical Indexes[J].Acta Agrestia Sinica，2O25，33（7） ：2238-2248

Abstract：To screen forage triticale（Triticale Witmack）varieties suitable for planting in aridareas，in this study we used‘Shida No.1 and‘Zhongsi 1048’as controls to study physiological response of triticale varieties ‘Gannong No.4'‘Gannong No.7"Zangsi No.1'，and lines C5， C23，and C25 under drought stress（7d，14 d， 21 d，35 d，49 d，63 d）.From the perspective of single factor，with the increase of drought stressdays，the relative soluble sugar，relative soluble protein，relative malondialdehyde，relative proline，relative superoxide dismutase activity andrelativecatalase activity of each triticale variety（line）were increased first and then decreased.The relative chlorophylland relative water content showed a gradual downward trend，and the average relative peroxidase activity was gradually increased.From the differences among triticale varieties （lines）， the average of relative proline content（1.83）and relative soluble sugar content（1.71）of C25 under different drought stress were the highest，and the average of relative soluble protein content（O.86），relative leaf water content（O.81），and relative chlorophyllcontent（O.95）were higher.The average of relative malondialdehyde content（O.75） of‘Zangsi No. Φ1⋅Φ1⋅Φ1 was the lowest. According to the comprehensive evaluation results of physiological indexes，the drought resistance of 8 triticale varieties（lines）was C25>CK2> 'Gannong 4′>C23> ‘ Gannong 7∘> ' Zangsi No. 1′>C5> CK1. The lines C25 belongs to the medium drought resistance type and has strong drought resistance.‘Gannong No.7’，‘Zangsi No.1'，C5 and CK1 belong to the drought sensitive type，and their drought resistance is weak.The results indicat that under drought stress，the drought resistance of triticale lines C25 is the strongest.

Key Words：Triticale varieties （lines）;Drought stress; Physiological and biochemical indicators

我国畜牧业发展对饲草的需求不断增加，提高饲草产量至关重要[1]。（剩余12594字）