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Genotype × environmental interactions for analyzing adaptability and stability in different clones of Dalbergia sissoo Roxb.

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Journal of Forestry Research 2012年第1期23卷 65-74页

作者： A.Kumar A.Bhatt S.Ravichandran V.Kumar S.Dobhal Division of Genetics and Tree Propagation Forest Research InstituteDehradun 248195India Directorate of Rice Research HyderabadAndhra Pradesh 528133India State Forest Department HoshiarpurPunjab 146001India

In total 36 superior clones of Dalbergia sissoo Roxb., screened from 300 selections conducted in natural and growing range of India and Nepal, were multiplied using single nodal cuttings and estab- lished to evaluate genotypexenvironmental interactions for adaptability and stability at the age of 30 months in three geographical locations in the state of Punjab, India. Clone 124 had maximum adaptability and stability （bi = 1.04） to perform exceedingly well over the locations. Clones 36 and 1 were stable with mean regression coefficient of 0.84 and 1.22, respectively. Nonetheless, clone 4 1 performed exceedingly well for all the characters to attain maximum population mean, and the perform- ance varied substantially across the locations. Therefore, clone 41 was considered as productive but non-adaptive clone. Though some of the clones were sensitive to sites, 14 clones for height, 16 for collar diameter, 12 for DBH and 7 for volume were relatively un-sensitive with higher regression coefficient. Nonetheless, clone 124 was the most Stable with average bi value of 1.04 and productive, which could play an important role in future breeding and commercial deployment of stable and produc- tive planting stock of Dalbergia sissoo.

关键词： Dalbergia sissoo Roxb. gxe interactions stability parame-ters adaptability superior genotypes

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