000			01522nam a2200217Ia 4500
008			220216s9999 xx 000 0 und d
100			_aDey S K
245		0	_aEffect of climatic parameters on yield and yield components in Hevea
260			_bNational Symposium on the Role of Plant Biotechnology in Improving Agriculture-Challenges and Opportunities and Physiological and Biochemical basis of crop yield, 23-25 March, 1995 _c1995
520			_aSeasonal variation of yield in Hevea is a well known fact which affects the optimum annual productivity of crop. Attempts were made to study the effect of climatic parameters on yield and yield componenets. Initial flow rate (F) is positively and plugging index (P) negatively correlated with yield. Path coefficient analysis reveals that high temperature reduces the soil moisture (SM) and SM in turn influences the plugging index, ultimately resulting in reduction of yield. In addition to that high temperature had direct effect on dry rubber content (Cr), which also is an yield component. Effect of Cr on yield was not prominent, hence yield had not been much affected. Effect of various climatic parameters on different clones were also discussed. High temperature <<Low soil moisture<<High Plugging<<Low yield.
650			_aClimatic parameters
650			_aHevea
650			_aYield
700			_aDevakumar A S
700			_aNair D B
700			_aRajagopal R
700			_aSathik M
700			_aSethuraj M R
700			_aVijayakumar K R
942			_cJS
999			_c57746 _d57746