コロミア・グランディフローラ (Collomia grandiflora) の二形態の花の不互換性,クリストガム種である
Science (New York, N.Y.)
|February 17, 1984
まとめ
コロミア・グランディフローラ (Collomia grandiflora) は,相互に互換性のない二形態の花を呈する. 花の形態の違い,花粉や風格の特徴など,これらの花種間の成功的な受精を妨げます.
科学分野:
- 植物学 植物学は植物学です.
- 生殖生物学 生殖生物学
- 植物科学 植物科学について
背景:
- コロミア・グランディフローラ (Collomia grandiflora) は,二形態の花を産むことで知られている種です.
- これらの花は相互互換性がなく,特定の生殖障壁を示唆しています.
研究 の 目的:
- コロミア・グランディフローラ (Collomia grandiflora) の二形花の形態学的および機能的な違いを調査する.
- 花の種類間の観察された相互不互換性の背後にあるメカニズムを理解する.
主な方法:
- ステグマティックなパピラ,花粉の大きさ,およびスタイル長さを含む花の形態学の比較分析.
- イントラモルフとインターモルフの両方の交差点における花粉管の成長率の測定.
- 受精成功の顕微鏡検査.
主要な成果:
- シャスモガムスの花は,クラストガムスの花と比較して,より小さい,フラスコ状のスティグマティック・パピラ,より大きな花粉,より長いスタイル,より速い花粉管の成長を持っています.
- インターモルフ交配では,花粉管の成長率が著しく低下しました.
- 受精は,二形花の種間の交配では起こらなかった.
結論:
- コロミア・グランディフローラ (Collomia grandiflora) のシャスモガムとクリストガム花の形態学的,生理学的違いは,生殖的隔離を生み出します.
- これらの花の二形態は,遺伝子フローの障壁として作用し,種内で明確な生殖戦略を維持します.
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