草业学报
草業學報
초업학보
PRATACULTURAL SCIENCE
2015年
6期
159-167
,共9页
孙云波%陈翔%陈垣%周传猛%白德涛
孫雲波%陳翔%陳垣%週傳猛%白德濤
손운파%진상%진원%주전맹%백덕도
预处理%红芪种荚%去皮浸种%焖种荚%发芽特性
預處理%紅芪種莢%去皮浸種%燜種莢%髮芽特性
예처리%홍기충협%거피침충%민충협%발아특성
pretreatment%radix hedysari seed pods%peeled soaking seeds%stewed seed pods%germination trait
采用去除果荚浸种、不去除果荚浸种荚和焖种荚等方法对红芪种子预处理12 h 后再行发芽试验，以不去果荚不浸种干种荚为对照，旨在探寻改善红芪种子发芽特性的种子预处理方法。结果表明，春播季节20℃／18℃自然光照条件下，各处理红芪种子发芽率随发芽天数的动态变化均呈“S 型”变化趋势，符合 Logistic 曲线方程。红芪种荚从置发芽床后第2～6天开始，种子先后启动发芽，第14～19天发芽陆续结束。整个发芽过程中，种子各发芽指标均表现出预处理间的显著差异性，预处理使红芪种子发芽提早1～4 d，发芽高峰持续期延长2 d。去果荚浸种12 h显著加快了种子发芽进程，焖种荚处理有效延长了发芽持续期。各处理发芽指标从高到低依次为去果荚浸种12 h （发芽率80．7％，发芽势54．0％，发芽指数7．083）＞不去果荚焖种荚12 h（发芽率64．0％，发芽势13．3％，发芽指数3．462）＞不去果荚水浸种荚12 h（发芽率48．0％，发芽势22．0％，发芽指数3．007）＞对照干种荚（发芽率34．7％，发芽势4．0％，发芽指数1．865）。以上说明种荚果皮造成的吸水障碍是限制红芪种子发芽的主要因素，播种前将红芪种荚浸种12 h 或焖种12 h 再行播种均可显著改善红芪种子发芽特性，去除果荚后再浸种效果更佳，发芽率可达80．0％以上。
採用去除果莢浸種、不去除果莢浸種莢和燜種莢等方法對紅芪種子預處理12 h 後再行髮芽試驗，以不去果莢不浸種榦種莢為對照，旨在探尋改善紅芪種子髮芽特性的種子預處理方法。結果錶明，春播季節20℃／18℃自然光照條件下，各處理紅芪種子髮芽率隨髮芽天數的動態變化均呈“S 型”變化趨勢，符閤 Logistic 麯線方程。紅芪種莢從置髮芽床後第2～6天開始，種子先後啟動髮芽，第14～19天髮芽陸續結束。整箇髮芽過程中，種子各髮芽指標均錶現齣預處理間的顯著差異性，預處理使紅芪種子髮芽提早1～4 d，髮芽高峰持續期延長2 d。去果莢浸種12 h顯著加快瞭種子髮芽進程，燜種莢處理有效延長瞭髮芽持續期。各處理髮芽指標從高到低依次為去果莢浸種12 h （髮芽率80．7％，髮芽勢54．0％，髮芽指數7．083）＞不去果莢燜種莢12 h（髮芽率64．0％，髮芽勢13．3％，髮芽指數3．462）＞不去果莢水浸種莢12 h（髮芽率48．0％，髮芽勢22．0％，髮芽指數3．007）＞對照榦種莢（髮芽率34．7％，髮芽勢4．0％，髮芽指數1．865）。以上說明種莢果皮造成的吸水障礙是限製紅芪種子髮芽的主要因素，播種前將紅芪種莢浸種12 h 或燜種12 h 再行播種均可顯著改善紅芪種子髮芽特性，去除果莢後再浸種效果更佳，髮芽率可達80．0％以上。
채용거제과협침충、불거제과협침충협화민충협등방법대홍기충자예처리12 h 후재행발아시험，이불거과협불침충간충협위대조，지재탐심개선홍기충자발아특성적충자예처리방법。결과표명，춘파계절20℃／18℃자연광조조건하，각처리홍기충자발아솔수발아천수적동태변화균정“S 형”변화추세，부합 Logistic 곡선방정。홍기충협종치발아상후제2～6천개시，충자선후계동발아，제14～19천발아륙속결속。정개발아과정중，충자각발아지표균표현출예처리간적현저차이성，예처리사홍기충자발아제조1～4 d，발아고봉지속기연장2 d。거과협침충12 h현저가쾌료충자발아진정，민충협처리유효연장료발아지속기。각처리발아지표종고도저의차위거과협침충12 h （발아솔80．7％，발아세54．0％，발아지수7．083）＞불거과협민충협12 h（발아솔64．0％，발아세13．3％，발아지수3．462）＞불거과협수침충협12 h（발아솔48．0％，발아세22．0％，발아지수3．007）＞대조간충협（발아솔34．7％，발아세4．0％，발아지수1．865）。이상설명충협과피조성적흡수장애시한제홍기충자발아적주요인소，파충전장홍기충협침충12 h 혹민충12 h 재행파충균가현저개선홍기충자발아특성，거제과협후재침충효과경가，발아솔가체80．0％이상。
Plant pod seeds of Hedysarum polybotrys were used in a germination test in order to explore the effect of seed pre-treatment methods.Several methods,such as soaking the peeled seeds,and soaking and ste-wing the unpeeled seed pods for 12 h,were compared with non-soaked,dry seed pods as a control.Results un-der natural illumination at 18-20℃ showed that germination dynamics in all pre-treatments followed S curve patterns that fitted to a logistic equation.Germination started days 2 -6 and finished days 14 -19.The pre-treatments showed significant differences in germination traits.The peeled and soaking pre-treatment and the soaking and stewed unpeeled-seed pods pre-treatment delayed peak germination by two days.The peeled and soaking pre-treatment significantly expedited germination while the unpeeled and stewing pre-treatment pro-longed germination duration.All the pre-treatments for 12 h significantly improved germination quality com-pared with the control.The control had a germination rate of 34.7%,germination power 4.0% and germina-tion index 1.865.The results for the peeled and soaked seeds were 80.7%,54.0% and 7.083 respectively, that for the unpeeled stewed seed pods 64.0%,13.3% and 3.462 respectively.The results thus show that pre-treating seeds by soaking or stewing can significantly improve germination quality.Improvements were highest in the peeled pre-treatment,where seeds showed over 80% germination rate.
