係唔係所有出果實gei植物都有分雄雌?

如題...係唔係所有出果實gei植物都有分雄雌?
如果要加強佢地結果gei機會
係唔係人工授粉最好?

聽講银杏樹有分雌雄  不過我就唔識分

大部份瓜果都喺雌雄同株（暫時只諗起木瓜和奇異果係分株的）， 但係如果係室內種的話或者冇乜昆蟲就任何瓜果都需要人工授粉。

雖然瓜係雌雄同株但係分開雌花同雄花而且開花時間短所以人工授粉會對結果有好大幫助。 還有牛油果和蘋果之類授粉就更複雜....need pollinator or a variety of different flower type

士多啤梨有冇花雌花同雄花 ga??我次次種親d士多啤梨都死

gender 發表於 2011-4-7 13:04
回復 Yuffie 的帖子

I wonder why it's born like this... same plant male and female...

I don't know...
Taking a guess I think it is trying to reduce the number of fertilised fruits so there's more chance of the plant carrying the fruits until maturity..... even just one fruit will produce a lot of seeds.   These are such hungry plants that probably only under human cultivation would they be able to support more fruits on a single vine.  There are growers who deliberately leave only one or two fruits on a vine (such as watermelon and rockmelon where the fruits are consumed ripe) for premium fruits that are bigger and of higher quality....

evavril726 發表於 2011-4-7 12:54
士多啤梨有冇花雌花同雄花 ga??我次次種親d士多啤梨都死

同意士多啤梨冇分雄雌, 但係我發覺我的士多啤梨如果冇網住的話會被啲雀仔食晒，有時連啲螞蟻都爭食.....

Yuffie 發表於 2011-4-7 19:01
同意士多啤梨冇分雄雌, 但係我發覺我的士多啤梨如果冇網住的話會被啲雀仔食晒，有時連啲螞蟻都爭食..... ...

咁嚴重??
士多啤梨係唔係唔可以俾水"揼"親ga@@?