Description of normal and abnormal seedlings patterns of Juglans nigra.

Abstract

Juglans nigra had high economic, industrial and technological importance. It is cultivated for its wood, as a rootstock of Persian walnut trees, and for human consumption (nuts). In the standard germination test, and other seed’s vigor tests, the results were expressed as percentage of normal seedlings. The objective of this work was to describe patterns of normal and abnormal seedlings of J. nigra to be used as references. The categories described were: Normal Vigorous (seedlings free of injuries), Normal Weak (seedlings with defi ciencies or injuries) and Abnormal with defects at root and epicotile level.