Clonal Variation in Rooting Responses of Juvenile Cuttings of Chir Pine (<I>Pinus roxburghii</I> Sarg.)

Abstract

The paper summarizes the results of rooting of juvenile cuttings of Chir Pine (Pinus roxburghii Sarg.). Cuttings emanating from 9 clones of P. roxburghii. (UPTSB-14 (Bhasla), HPSNR-5 (Nurpur), UPBER-5 (Berinag), UPKAL-10 (Kaligarh), UPPAT-I094 (Patwadangar), UPTSS-3 (Sikanderdbarl, UPDNH-770 (Dhanari), UPBER-368 (Berinag) and UPDNH-81 (Dhanari) were treated with different concentrations of IBA viz. 1000 ppm, 2000 ppm, 3000 ppm and 4000 ppm and planted in vermiculite under mist condition. Significant differences in rooting percentage and other root parameters were observed between the clones. Among the four concentrations of IBA tried, 4000 ppm proved to be the best. 100% rooting was observed in three clones viz. UPTSB-14, UPKAL-10 and UPPAT-1094.