四角菱根系的发育和功能.pdf

四角菱根系的发育和功能.pdfJournalofAnhui ASei201139{8)441644174422 责任编辑杨莹莹责任校对卢瑶
四角菱根系的发育和功能
陆昌燕跆逵,郑兴峰¨
.徐州师范大学生命科学学院,江苏徐州;帐∨┮悼蒲а芯吭核耷ㄅ┛扑账耷
摘要康腯研究四角菱蛁 Roxb)[]
()3[]
的胚根和羽状物进行有限生长,胚根停止生长后顶端出现褐化死亡;胚根基部和茎节上的不定根向水底泥层生长。并在泥层中弯曲生
4
象,而除去羽状物保留不定根的叶片没有黄化。崧踋随茎生长而向顶端发生的不定根系替代了胚根系,更有效地固定水体中柔细漂
浮的植株,并具有吸收无机盐的重要功能,而羽状物是不定根特化的补充性光合器官。
关键词四角菱;不定根;羽状物;发育;功能
Q944945A051766ll(2011)080441602
Development and ofquadrspnosa.
Chang-yan ai(School scienceXuzhou 。,
aimed the characteristics and the
f Objective paper explore development Trapa
quadrispinosa .【 WaS eonducted the and development the water .
and
nelsand the cultivation WaS treated three off roots
pinnate roots)and roots and pinnate radical and the pinnate appendi
ces 產 the radical presented after the radical stopped growthThe roots the
radical and the downwards and the under water bodyThepinnate WaS generally
lines symmetryAfter the rootand the and the pinnate excised offetiolating
the new the WaS cut new
occurredhoweverif pinnate awaythe 癈
titious systemwhichcontinually arose towards the along the and was stead the the
珻 fix its plant which was and water bodyandWag important functionpinnate WaS
an specialized .
Key words TrapaeeaeAdventitious籔 appendicesDevelopmentFunction
(Trapaceae)遮、盛有腐殖质河泥和河水的玻璃水槽内,体积为×
Jx06,槽中水位 m02复合肥料。
稀分枝,开始为黄白色,后转为紫黑色或绿色,可向地生长进入植株产生菱盘成熟后,不定根和羽状物已形成,不定根
(已进入水底泥层。选取部分植株,分别切除其不