【正文】 ave a high seed setting rate, from a high to low order: A. retrofleus L.,A. viridis L.,A. spinosus L. and A. lividus L..It shows that its selfpatibility seed set characteristics may be beneficial to the invasion and the invasive peculiarity and seed set percentages in Amaranthus is not positively correlated. Through the parison in Amaranthus,the invasive peculiarity and seed set amount is positively correlated in the statistics of seed set A. retrofleus the highest amount:78063,and the amount from high to low were: A. retrofleus L.,A. spinosus L.,A. viridis A. lividus L.. So integrating the seed set percentages and seed set amount ,we can found that it positive correlation with invasive peculiarity,from strong to weak order is A. retrofleus L., A. spinosus L., A. viridis L. and A. lividus L.. In addition emasculation bagging also has some seed setting, this phenomenon still require the further indoor and outdoor experimental study. Key word:Amaranthus。Breeding system characters。Intrusion characteristics 常熟理工學(xué)院畢業(yè)設(shè)計(jì)（論文） II 目錄 ........................................................................................................................................... 1 繁育系統(tǒng) ........................................................................................................................... 1 繁育系統(tǒng)的研究進(jìn)程 ............................................................................................. 1 繁育系統(tǒng)中的異花傳粉機(jī)制 ................................................................................. 2 交配系統(tǒng) ................................................................................................................. 2 莧屬外來(lái)入侵植物 ........................................................................................................... 3 本研究所選擇的四個(gè)莧屬外來(lái)入侵植物的生物學(xué)特性 ............................................... 3 外來(lái)入侵植物繁育系統(tǒng)的研究進(jìn)展 ............................................................................... 4 外 本研究的意義 ............................................................................................................... 4 ............................................................................................................................. 6 材料 ................................................................................................................................... 6 莧屬四個(gè)外來(lái)入侵種入侵性 ……………………………………………………… ....… .6 方法 ................................................................................................................................... 6 野外 人工控制授粉實(shí)驗(yàn) 的研究方法 ..................................................................... 6 開放式大棚人工控制授粉實(shí)驗(yàn)及結(jié)實(shí)量統(tǒng)計(jì)實(shí)驗(yàn) ............................................. 7 數(shù)據(jù)統(tǒng)計(jì)分析 ......................................................................................................... 7 ........................................................................................................................................... 8 野外人工控制授實(shí)驗(yàn)結(jié)果及分析 ................................................................................... 8 反枝莧不同處理間結(jié)實(shí)率 ..................................................................................... 8 皺果莧不同處理間結(jié)實(shí)率 .................................................................................... 8 凹頭莧不同處理間結(jié)實(shí)率 ..................................................................................... 9 三個(gè)種之間同種處理的結(jié)實(shí)率比較 ................................................................... 10 開放式大棚實(shí)驗(yàn)結(jié)果及分析 ......................................................................................... 11 同種植物不同處理間的結(jié)實(shí)率 ........................................................................... 12 同種處理不同植物的結(jié)實(shí)率比較 ....................................................................... 14 莧屬四種植物的結(jié)實(shí)量比較 ............................................................................... 15 ......................................................................................................................................... 17 常熟理工學(xué)院畢業(yè)設(shè)計(jì)（論文） III 自交親和和自主結(jié)實(shí)與莧屬入侵性的關(guān)系 ................................................................. 17 莧屬去雄套袋結(jié)實(shí)現(xiàn) 象的解釋 ..................................................................................... 17 結(jié)實(shí)率和結(jié)實(shí)量與入侵性的關(guān)系 ................................................................................. 17 參考文獻(xiàn) .............................................................................................. 19 致謝 ..................................................................................................... 21 常熟理工學(xué)院畢業(yè)設(shè)計(jì)（論文） 1 生物入侵不僅嚴(yán)重威脅著當(dāng)?shù)氐纳锒鄻有?、生態(tài)系統(tǒng)的結(jié)構(gòu)和功能，而且給社會(huì)經(jīng)濟(jì)發(fā)展帶來(lái)了重大的經(jīng)濟(jì)損失 。 繁殖是入侵種群建群時(shí)面臨的根本挑戰(zhàn)，因而，與繁殖有關(guān)的特征直接影響到歸化和入侵的成功 [2]。 繁育系統(tǒng) 繁育系統(tǒng)通常定義為代表直接影響后代遺傳組成的所有有性特征 [3]，主要包括花的合特征、花各性器官的壽命、花開放式樣、自交親和程度和交配系統(tǒng)，其中交配系統(tǒng)是核心[4]，其結(jié)合