一年生大芻草與玉米雜交後裔之分蘗性及地上部鮮重之研究

Studies on the Tillering Behavior and Above Ground Fresh Weight of Maize and Annual Diploid Teosinte and Their Progenies

謝光照(Guang-Jauh Shieh) ； 何千里(Chan-Lee Ho) ； 盧煌勝(Hung-Shung Lu)

《中華農業研究》 46卷3期 (1997/09) Pp. 241-248

https://doi.org/10.29951/JARC.199709.0004

摘要

本研究以一年生大芻草TeA(Euchlaena mexicana, 2n=20)與玉米(Zea mays, 2n=20)自交系Pi330、B77之雜交後裔為材料，探討分蘗性及地上部鮮重之變化。結果顯示，一年生大芻草之分蘗數隨著生育日數之增長而增加，出土後60天可達最高峰；同時可看出在不同程度異質結合世代中，當玉米遺傳質比例增加時，其分蘗數呈現明顯的減少現象。TeA與BC1一般具有較高比例之二次分蘗，其餘雜種世代不具二次分蘗或極低。F1雜種在單株地上部鮮重上具有明顯之雜種優勢，可直接用於青刈牧草之生產。

關鍵字

一年生大芻草 ； 玉米 ； 分蘗性 ； 雜種優勢

並列摘要

Annual diploid teosinte TeA (Euchlaena mexicana, 2n=20), maize inbred lines B77, Pi330 (Zea mays, 2n=20) and their progenies were used to investigate their tillering behavior and above ground fresh weight. The results are summarized as follows: Tiller number of TeA increased following by growth stage, and arrived maximum at sixty days after emergence. TeA and BC1 had more second tillering from main tiller at the seventy days after emergence. As the proportion of maize germplasm increased, then the tiller number decreased in their progenies. F1 hybrids of maize and TeA had heterosis in above ground fresh weight, and can be directly used as forage production.

並列關鍵字

Annual diploid teosinte ； Maize ； Tillering ； Heterosis