Hybrid weakness
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…The phenomenon of hybrid vigor is now widely used in breeding, and is used in the breeding of corn, tobacco, silkworms, pigs, and other species. Conversely, when hybrids are produced, the first generation of hybrids may be inferior in overall vitality to the parents, a condition known as hybrid weakness. Hybrids may also be sterile. From [Hybrid vigor] …In rare cases, certain genetic effects can cause the growth of the first generation of hybrids to be weakened. This is called hybrid weakness. *Some of the terminology that refers to "hybrid weakness" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
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…雑種強勢の現象は現在育種に広く利用されており，トウモロコシ，タバコ，カイコ，ブタなどの育種に用いられている。これとは逆に雑種をつくると雑種第1代が，両親よりも総合的な生活力において劣る場合があり，雑種弱勢hybrid weaknessとよばれる。また雑種は不稔(不妊)性を示す場合もある。… 【雑種強勢】より…また，特定の遺伝的な効果によって雑種第1代の生育がまれに弱勢化することがある。これは雑種弱勢hybrid weaknessといわれる。 ※「hybrid weakness」について言及している用語解説の一部を掲載しています。 出典｜株式会社平凡社世界大百科事典 第２版について | 情報 |
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