EFFECTS OF TEMPERATURE, HUMIDITY AND LIGHT ON THE GERMINATION OF CONIDIOSPORES OF SPRING WHEAT POWDERY MILDEW IN NINGXIA IRRIGATED AREA
- VernacularTitle:温湿度和光照对宁夏灌区春小麦白粉病菌分生孢子萌发的影响
- Author:
Qicun CHEN
- Publication Type:Journal Article
- Keywords:
Spring Wheat;
Powdery Mildew;
Conidiospores;
Germination
- From:
Microbiology
1992;0(02):-
- CountryChina
- Language:Chinese
-
Abstract:
In Ningxia irrigated area, the conidiospores of Erysipe graminis f. sp. tritici on spring wheat germinated at -3 -- 29℃ (optimum 10 — 15℃). At 33℃, no conidium germinated, although the conidiospores might germinate in the relative humidity of 0—100%, yet they did best in a saturated atmosphere. Ultra-violet light killed the conidiospores. Under the direct solar radiation the percenta ge of germination was 13.86%, in the diffused light, 34.33%, in the darkness, 38.57%.
