ABSTRACT
Influence of height of plant, E. graminis, H. tritici-repentis and "|dry leaf"| character on yield of wheat lilles. La Platina Exp. Sta. (INIA), 1979

René Cortázar S.1
 

At La Platina Exp. Sta. (INIA), Santiago, Chile, information obtained from wheat introduction nurseries in 1979. was analyzed to determine the effect on' yield of plant height, Erysiphe graminis, Helminthosporium tritici-repentis and "dry leaf'symptom.
The average yield was related with plant height: lines 1.20 m or taller gave yields 10.5 per cent higher than lines smaller than 1.10 m.
E. graminis affected yield in 5.3 per cent; H. tritici- repentis, in 6.6 per cent, "dry leaf" symptom, in 10.5 per cent; E. graminis together with "dry leaf", in 15 per cent; all this, when compared with lines with normal leaves and no disease symptoms.
There was no association between E. graminis or H. tritici-repentis and "dry leaf" symptom.
Correlation values are given for yield, plant height, susceptibility to E. graminis and H. tritici-repentis, kernel shrivel ing, heading date, number of selections, and "dry leaf" character.

Keywords:
1 Ing. Agr., Ph .D., Estación Experimental La Platina (INIA), Casilla 5427, Santiago, Chile.