IMPROVEMENT OF POPULUS DELTOIDES BARTR. EX MARSH. IN INDIA - PROVENANCE VARIATION AND INTRASPECIFIC BREEDING

摘要

A study was made to compare the 1 1/2 years performance of seedlings belonging to Eastern Gulf (EG), East central (EC) and Southeast Atlantic (SA) sub-regions of South-eastern USA. The collar diameters were in the order of SA>EG> EC. Variation among stands was significant for collar diameter and number of branches per metre of stem length. About 14700 seedlings belonging to 66 control-pollinated families and 5000 seedlings belonging to 20 open-pollinated families have been produced. Selection and cloning of promising genotypes was done. Testing of clones is in progress.