Earticle

초록

영어

The long lived iteroparous conifers produce male and female gametophyte for hundreds of years once they reach the reproductive stage, however, the production of seed is not frequent. This phenomenon of infrequent seed production in conifers is yet to be understood. An attempt to study this change in cone production in Cedrus deodara of Western Himalayas -a species reported to be mainly monoecious and rarely dioecious has been made. The observations recorded on selected trees of flowering/fruiting stage for four years at four different locations have shown the species to be dioecious with higher percentage of female trees during good seed year but with no definite or predictable pattern of reproduction in the trees. A decline in production of female trees was witnessed at all but one location immediately year after reaching the maximum (good seed year). The phenomenon of seed production has been observed to be cyclic and site specific. A change in the sexual behavior of the trees from male to female or vice-versa, male or female turning monoecious or vegetative and vegetative coming to reproductive was unpredictable.

목차

Abstract
 Introduction
 Materials and Methods
 Results
  Site II: Nankhari forest
  Site III: Sarain forest
  For Site IV: Kandyali forest
 Year wise per cent distribution of sexual behavior
  Year and site wise percentage of female trees
 Discussion
 Conclusion
 References

키워드

저자

• Rajesh Sharma [ Himalayan Forest Research Institute, Conifer Campus, Panthaghati, SHIMLA-171013 (HP), India ] Corresponding Author
• Sunil Waman Bhondge [ Himalayan Forest Research Institute, Conifer Campus, Panthaghati, SHIMLA-171013 (HP), India ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  Journal of Forest and Environmental Science [산림과학연구]

• 간기

  계간

• pISSN

  2288-9744

• eISSN

  2288-9752

• 수록기간

  1981~2026

• 등재여부

  KCI 등재

• 십진분류

  KDC 526 DDC 634