Opaque-2 及 floury-2 基因對玉米粒重之影響
Other Title
Effects of Opaque-2 and Floury-2 Genes on Kernel Weight of Maize
Journal
農業研究
Journal Volume
21
Journal Issue
3
Start Page
175
End Page
186
Date Issued
1972-09-03
Date
1972-09-03
Author(s)
萬雄
王光
Hsiung Wan
Soh-Har Wong
Abstract
玉米中opaque-2與floury-2兩個突變基因，使蛋白質中離胺酸與色胺酸的含量增加，因此使其營養價值提高。目前玉米育種多以改良蛋白質的品質爲主要目標。但在育種過程中發現這兩個突變基因，有減低產量的傾向。本研究乃以美國引進之opaque-2及floury-2原種，經三次回交於臺灣抗露菌病的15個自交系，再經自交分離選拔的o2與fl2系統爲材料，探討o2與fl2基因對玉米粒重及產量的影響。
Since the discovery of opaque-2 (Mertz, 1964) and floury-2 (Nelson, 1965) genes in maize, it was generally recognized that these mutant genes could increase the lysine content in maize protein. Feeding experiments by various investigators also proved that the nutritive value of this high lysine corn was improved tremendously. Therefore, breeders all over the world started to initiate breeding programs for high lysine corn. However, there was a setback in the development of high lysine corn because both opaque-2 and floury-2 genes had the effect of yield reduction. The purpose of this investigation is to study the effects of opaque-2 and floury-2 genes on kernel weight of maize bred in Taiwan, and the feasibility of developing high lysine corn with normal yielding ability. There are three items to be studied; 1) the effects of opaque-2 and floury-2 genes on kernel weight of segregating ears of inbreds; 2) the effects of opaque-2 gene on kernel weight in single crosses; 3) yield performance of opaque-2 and floury-2 single crosses.
Publisher
農業試驗所
Type
journal article
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