Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/37215
標題: 膜衣被覆處理對高粱種子發芽之影響
THe effect of film-coating on seed germination in sorghum
作者: 顏素芬
Fen, Yan Shu
關鍵字: Seed;膜衣被覆;Film-coating;Sorghum;Germination;種子;高粱;發芽
出版社: 農藝學系
摘要: 
本研究係利用膜衣被覆技術,分別以ethyl cellulose(EC),sodium
carboxycellulose(CMC),polyvinyl pyrrolidone(PVP)等三種膜衣劑包被
高粱臺中五號及臺南六號種子,探討膜衣被覆對種子萌芽特性之影響及其
在雜交種子生產上之可能應用。試驗結果顯示,所用之膜衣中僅EC對高粱
種子吸水速率與萌芽時間之改變有明顯的效果。疏水性材料EC被覆後,種
子之水分吸收速率、滲漏電導度、氧氣吸收速率、α-澱粉■及β-澱粉■
活性均明顯下降,並延長種子萌芽時間,此等現象可能由於種子之種皮傳
導度降低,使水分吸收延緩,進而使發芽時序改變所致。另方面,以親水
性材料CMC被覆後,種子之水分吸收、滲漏電導度、氧氣吸收速率及α-澱
粉■活性均有增加的趨勢,但對種子萌芽時間則無明顯影響。供試兩品種
對膜衣劑之反應大致類似,唯對EC被覆劑量之反應以臺中五號較為敏感,
這可能與臺中五號之種皮較厚,致種皮傳導度較低等種皮特性有關。

The present experiments were designed to evaluate the effect of
film coating on germination and emergence responses of sor-
ghum cultivars Taichung No.5 and Tainan No.6 using ethyl
cellu- lose(EC), polyvinyl pyrrolidone(PVP-40) and sodium
carboxymethyl cellulose(CMC) as coating materials. The results
indicated that the polymer EC-coating could reduce
imbibitional water uptake and imbibitional leaching, decrease
oxygen uptake, inhibit amyl- ases activities, and consequently
increase the mean emergence time(MET). These results might be
linked to the decreased seed coat conductivity in the seeds
coated with EC. In contrast, CMC coating increased water
absorption, increased seed leakage, en- hanced oxygen uptake
and stimulated amylase activity. However, CMC coating didn't
affect the MET. Both cultivars responded to coating, similarly.
Nevertheless,cultivar Taichung No.5 was more responsive to EC
coating,in terms of MET,as compared to cultivar Tainan No.6.
This phenomenon seems to be related to the thicker seed coat
and lower seed coat conductivityof cultivar Taichung No.5.
URI: http://hdl.handle.net/11455/37215
Appears in Collections:農藝學系

Show full item record
 

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.