STUDY ON CHANGES OF CHLOROPHYLL IN LEAVES OF SOYBEAN VARIETIESOF DIFFERENT RESISTANCE TOCerospora soj ina Hara(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Title:: STUDY ON CHANGES OF CHLOROPHYLL IN LEAVES OF SOYBEAN VARIETIESOF DIFFERENT RESISTANCE TOCerospora soj ina Hara

Author(s):: Liu Yaguang¹Li Liqing²Ma Jing sheng³Yang Qing kai¹; 1. Northeast Agriculture University , Agriculture College , Harbin 150030;
2. Hei longjiang Provincial Grain School 150080

Keywords:: Cercospora sojina Hara; Content of chlo rophy ll a and b; Resi stant soy bean v arieties; Susceptibleso ybean va rieties

Abstract:: So ybean va rieties o f di fferent resi stance w ere inocula ted wi th di fferent races of Cercospora soj inaHa ra at 3～ 4 leaf ag e , w ere sampled during 1～ 10 days af ter inoculatio n and the content of chlo rophy ll inleav es of bo th the inoculated and the healthy plant s w ere measured. The resul ts show ed that w hen theleav es w ere prima rily infected byCercospora soj ina Hara, co ntent o f chloro phyll a and b in leaves of resistantv arieties and susceptible v arieties w ere low er than those o f cor respo nding healthy leav es. During No.7 da y to No. 10 day af ter ino culating , the content of chloro phyll a a nd b in the leaves of susceptible v arietiesw ere low er tha n tho se of cont rol, but the content o f chlo rophy ll a a nd b in the leav es o f resistant v arietiesw ere hig her tha n cont rol. Otherwise, the chang es o f chloro phyll a and b w ere dif ferently ef fected byraces o f dif ferent pathog enici ty , No. 7 race o fC. sojina w as the st rong est one to dest roy st ructure of chloroplast, the second o ne w as No. 6 race, the w eakest one w as No. 4 race, races No. 2 and No. 1 w ere in themiddle. The specific v alues of chlo rophy ll a and b in leav es o f resi stant va rieties w ere higher than tho se insusceptible va rieties, w e prelimina rily co nsidered that the specific value of chlo rophy ll a and b can be usedas a biochemical ma rker fo r identificatio n of soybea n resi stance to f rog e- eye leaf spot.

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Last Update: 2016-12-28