Interspecific grafting of Pinus patula

Abstract

Objective: To evaluate the compatibility of Pinus patula grafts on rootstocks of seven pine species.

Design/Methodology/Approach: P. patula scions were grafted on P. greggii, P. teocote, P. pseudostrobus, P. cembroides, P. ayacahuite, P. hartwegii and P. patula rootstocks. We evaluated graft growth and survival. The seven treatments were established in a randomized complete four block design; survival and growth were recorded during the experiment.

Results: At month eight, the highest survival was on P. patula and P. teocote rootstocks, both with 35%; while in P. cembroides no graft survived. .

Study Limitations/Implications: Rootstocks of P. cembroides, P. hartwegii and P. ayacahuite were not compatible for grafting with P. patula. This reduces the number of potential species for cloning P. patula genotypes.Finding/Conclusions: Survival and graft growth were favored on rootstocks phylogenetically closer to P. patula.