蘆筍(Asparagus officinalis L.)幼苗開花習性之研究

Abstract

蘆筍九品種中之多數幼苗在臺灣北部可於定植後4~5個月內開花，雄株開花期較雌株者至少提早五週，故可利用此雄株早開花之習性，達到選拔栽植全部雄性幼苗之目的。此九品種中有三品種其雄性雌雄同株發生之百分率為3.5%~4%。又有部份品種之少數植株有極早開花現象，即播種發芽後1~2週內即行開花。 Most of the asparagus seedlings of the nine varieties tested commenced flowering in about 4-5months after setting in the northern part of Taiwan (25°N.). Flowering of male plants took place at least 5 weeks earlier than did the female ones. it provides us with an excellent chance to select male plants in the seedling stage. In three out of nine varieties 3.5-14% of andromonoecious plants were encountered. Some plants in a few varieties started to flower in an extremely early seedling stage, say one to two weeks after germination.