Meiotic irregularities in larix

• 발행기관: 한국육종학회
• 저자명: Dong Ill Shin(申東逸)
• 간행물 정보: 『한국육종학회지』Vol.27 No.2, 185~190쪽, 전체 6쪽
• 주제분류: 농수해양 > 기타농수해양
• 파일형태: PDF
• 발행일자: 1995.06.30

영문 초록

Meiotic irregularities occured during microsporogenesis in four different larch species were investigated as the first step to determine factors affecting seed yield in Larix. The major abnormalities observed in the materials examined were chromosomal stickiness, degeneration of PMCs(pollen mother cell), acentric chromosomes, unequal distribution of chromosomes, lagging chromosomes, and aberrant microspore formation. Among them degeneration of PMCs, acentric chromosomes at metaphase 1, and aberrant microspore formation were the most common irregularities in all species investigated. Conclusively, meiosis of the larch PMCs was disrupted with total frequencies ranging from 28.3% to 52%, depending on the species. The results obtained in this study indicate that pollen quality might be responsible for seed loss in Larix.

목차

ABSTRACT

Introduction

MATERIALS AND METHODS

RESULTS AND DISCUSSION

摘要

LITERATURE CITED

키워드

Larix Meiotic irregularities Pollen Seed loss