ارزیابی برخی از ارقام برنج براساس صفات مرتبط با تحمل به جوانه زنی پیش از برداشت

Abstract:
The lack of seed dormancy is one of the main reasons for pre-harvest sprouting in farms that are under wet
weather condition. In this study ten cultivars consist Sefidrud, Kadoos, Dorfak, Taromamiri, Shahpasand,
Binam, Domsefid, Domzard, Garib, Bjar were cultivated in Agricultural Research Station, University of
Guilan as a randomized complete block design and important traits related to pre-harvest sprouting such as
germination percentage and alpha-amylase enzyme activity were measured. The correlation results showed
between the percentage of pre-harvest sprouting and alpha-amylase activity (r=0.801) and the number of
germinated seeds in a cm of panicle (r=0.996) there are a significant positive correlation. Result of variance
Analysis of variance showed the cultivars have a high variation for traits related to pre-harvest sprouting.
Also base on the result of comparision avrage, cultivars were placed as above traits in different categories.
Overall based on the study Domsefid native curtivar as tolerant and Dorfak improved were identified as a
sensetive cultivar in compare with pre-harvest sprouting.