Author/Authors :
ruguzova, ganna national botanical garden (named after n.n. grishko nas), UKRAINE , pokhylchenko, olga national botanical garden (named after n. n. grishko nas), ukraine , ivanova, irina taras shevchenko kyiv national university - o. v. fomin botanical garden, UKRAINE , yaremchuk, yurii dendropark “vysokogirny”, UKRAINE
Abstract :
Female cone structure in two species - Pinus pumila (Pall.) Reg. and Pinus armandii Franch. in the conditions of introduction are presented in this paper. It has been demonstrated that number of scales and fertile/sterile scales index are similar to those in their native areas. At the beginning of the second year development (February) female gametophytes in both species were at free-nuclear stage and only in some P. armandii ovules alveolar stage was noticed. It was found out that the main reason for ovules` abortion is lack of pollination. However, ovules` abortion was also noticed at the second year and its reasons need to be studied in details.
Keywords :
Pinus pumila , Pinus armandii , female cones , fertile scales , ovules , seeds
