|Title:||愛文檬果花期與無子果生成之關係研究||Other Titles:||The Relation between Flowering Period and Seedless Fruits Formation of Irwin Mango (Mangifera indica L.)||Authors:||Ou, Shyi-kuan
|Keywords:||愛文檬果||Issue Date:||Dec-1983||Publisher:||臺灣園藝學會||Journal Volume:||29||Journal Issue:||4||Start page/Pages:||269-278||Source:||中國園藝||Abstract:||
愛文檬果(Mangifera indica L.)所發生的無子果體積與重量均較正常果為小，但其果肉與種殼的比率為正常果的3.14倍。在玉井檬果專業區同一果園不同坡向會影響無子果產生，在北坡向無子果的發生率為南坡向的7.23倍，依開花期間兩坡向之溫度比較,北坡向溫度較低可能是造成此一差異的主要原因。
The volumn and weight of seedless Irwin mango were less than those of noumal fruits, but the pulp/stone ratio of the former was 3.14 times of the latter. Study at one orchard at Yu-Ching of Tainan indicated that different slope direction influenced the formation of seedless fruits. The number of seedless fruit formed on northern slope direction were 7.23 times more than that of the southern one. From the study of temperature record, the formation of more seedless fruits on the northern slopeland seemed to be correlated to the generally lower temperature than the southern slope during flowering period.
In early and middle part of the flowering period (from December to March), the lower temperature (<18.7℃) and more rainy days resulted in very low percentage of functional stamen in both perfect and staminate flowers, which panicles set fruits with very high proportion of seedless fruits. In the late part of flowering period (April), when temperature rose (>20℃), functional pollen formed, with very few seedless fruits produced.
Perfect flowers were emasculated and followed either by no pollination or pollination with bulk pollen collected from same variety or from different varieties. Whether pollinated or not, all fruits harvested were seedless. This indicates that artificial pollination does not quarantee the formation of normal fruits. The temperature effect seems to be more responsible than pollination for the formation of seedless mango fruit.
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