Heterosis is a phenomenon in which a progeny of distinct individuals exhibitshigherlower values for the traits than the average of. Analysis of mid and better parent heterosis indicates the existence of sufficient heterosis on fresh and dry fruit yield and oleoresin content 45 abrham s, mandefro n, sentayehu a. Heterosis, hybrid vigor, or outbreeding enhancement is the improved or increased function of any biological quality in a hybrid offspring. Download fulltext pdf heterosis for lifetime production in hereford, angus, shorthorn, and crossbred cows article pdf available in journal of animal science 708. The study also documented a maternal advantage of 7% higher pregnancy rate when comparing the herefordsired females to. Heterosis for lifetime production in hereford, angus.
After maize hybrid was first utilized in field on a large scale in usa in 1930s, heterosis of other crops such as rice, sorghum, rape, and vegetable etc began to be widely used in production, and had made great achievements in crop breeding by the end of last century, mainly contributed to notable increasing of crop yield. The user is free to download, print, store and share this work. Heterosis and heterobeltiosis study of hot pepper capsicum annuum l. Lifetime production of crossbred beef cows 2399 1971 breeding seasons and to multisire breeding pastures for the 1972 through 1975 breeding seasons, according to the mating plan of the. American hereford harris heterosis project american. Reproductive records of beef cows were collected in 2000, 2001. Maternal and heterosis effects were not significant p 0.
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