Use of Economic Characters as Ideotypes in Asparagus Breeding

蘆筍理想性狀在育種上之利用

陳榮五(Yung-Wu Chen)

《臺東區農業改良場研究彙報》 1輯 (1987/06) Pp. 1-9

https://doi.org/10.6959/RBTDAIS.198706.0001

摘要

一般像蘆筍之類的長期作物，其育種時間都需要很長，利用其經濟特性做為理想性狀，在育種上，育成品種的時間可縮短，又較容易去除不良的性狀。蘆筍的理想性狀認定如下：1.母莖數，其與嫩莖數及產量有關。2.母莖高度，高大的植株，其產量較高。3.根盤大小，其與母莖數及產量有關，根盤愈大，生育愈旺盛，產量亦高。4.母莖第一分枝高度，其影響嫩莖筍尖之緊密度，其第一分枝高度愈高，筍尖愈緊密。5.母莖直徑，較大的母莖，雖可生產較大的嫩莖，但嫩莖較少，其產量較低。本篇有關蘆筍理想性狀的訂定，其證明資料來自二個栽培品種的試驗及相關係數的研討。利用這些理想性狀在蘆筍育種上，育成了三個新的品種，即台南選一、二及三號。

並列摘要

Time required to perform any breeding program for a perennial like asparagus is generally lengthy. The use of economic characters as ideotypes in asparagus breeding may shorten the time considerably, and it is comparatively easy to eliminate defects.The economic characters as ideotypes are defined as follows:1. Number of stalks in relation to yield and numbers of spears.2. Long stalks giving a high yield.3. Crown size, related to yield and number of stalks, a large crown means vigorous growth, giving high yields.4. The height of the first branch of the stalk: This affects the tightness of the spear tip.5. The diameter of the stalks, larger stalks produce larger spears, but also give fewer spears and a lower yield.In this paper, the concept of the ideotype is discussed in relation to data derived from two cultivar trials and correlation coefficients are given for several of the ideotype characters.The use of economic characters as ideotypes was also applied to the breeding program which resulted in the release of three new varieties, Tainan selection No. 1, Tainan selection No. 2 and Tainan selection No. 3.

並列關鍵字

Ideotypes ； Breeding ； Asparagus