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Understanding of Heterosis

Heterosisin Anlaşılması

Journal Name:

  • Kahramanmaraş Sütçü İmam Üniversitesi Doğa Bilimleri Dergisi

Publication Year:

  • 2002

Key Words:

Keywords (Original Language):

Author NameUniversity of AuthorFaculty of Author
Abstract (2. Language): 
Heterosis, çoğu bitkilerin ıslahında sağlanan başarıda etkili olmanın yanında, ticari mısır endüstrisi için de oldukça önemlidir. Heterosisin genetik mekanizmasını anlamada bazı ilerlemeler kaydedilmiş olmasına rağmen, bu olayın biyokimyasal, fizyolojik ve moleküler esasını açıklayan çok az bilgi vardır. Bu derleme makalede de, heterosisin açıklamasına çalışılmıştır. Bilim adamları 1900’lü yılların başından itibaren heterosisin mekanizmasını belirlemek için araştırmalara başlamışlardır. Uzun yıllar çoğu bilim adamları, heterosisi dominatlığa ve üstün dominatlığa bağlamış, son yıllardaki araştırıcılar ise epistatik ve linkagenin heterosisde büyük payı olduğunu belirtmişler. Son yüzyıldaki yaygın fikir, heterosisle ilgili hipotezlerin hiçbirinin her deneme ve her organizma için geçerli olmadığı şeklindedir.
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Abstract (Original Language): 
Heterosis is a major reason for the commercial maize industry as well as for the success of breeding efforts in many other crops. Although some progress has been made in understanding the genetic basis of heterosis, there is relatively little information regarding the biochemical, physiological, and molecular basis of this event. In this review, we review the explanation of heterosis. Beginning in the early 1900s, scientists began designing experiments to determine the mechanism of heterosis. Over the years, the majority of the scientific community has attributed heterosis to dominance or overdominance, and recently scientists have reported that epistasis and linkage are major contributors. One common theme throughout the last century has been that no one hypothesis of heterosis holds true for every experiment or every organism.
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