Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/29258
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dc.contributor.advisor張武男zh_TW
dc.contributor.advisorWoo-Nang Changen_US
dc.contributor.author程新珺zh_TW
dc.contributor.authorCherng, Hsin-Jiunen_US
dc.date1994zh_TW
dc.date.accessioned2014-06-06T07:32:16Z-
dc.date.available2014-06-06T07:32:16Z-
dc.identifier.urihttp://hdl.handle.net/11455/29258-
dc.description.abstract利用穴盤育苗的洋蔥無論在苗期或定植初期都比現行田間培育的45天苗有 較大的苗株,定植後有較佳的生長恢復性。採收時Granex 429穴盤苗有較 高的產量和球形整齊度,其結球始期較對照組約提早 5天,由葉重比可推 論穴盤育苗對Granex 429有促進早熟的效果,但是 Superex的穴盤苗與田 間培育的45天苗株在產量和早熟性上並沒有顯著的差異,只是45天的穴盤 苗有較高的大球比例。三個品種中Superex最早熟,其次為Grano 502和 Granex 429,但是Granex 429的總產量和可用產量最高,Grano 502 與 Superex居次。Superex有較多的中、大球,球型整齊度最高,Granex 429較易分球,試驗期中只有Grano 502有抽苔現象。 45、55和65天三個 苗齡在育苗期與定植初期都以大齡苗有較大的植株,但是幼齡苗有較佳的 定植後生長恢復性。採收時苗齡45天的Granex 429和Grano 502 穴盤苗 較55天者早熟但總產量較低,但在 Superex的二個苗齡中則無顯著差異。 穴格容積小的穴盤苗在育苗期因根群生長受限所以苗株較小,在春季育苗 期Granex 429的128格穴盤苗明顯的大於288格穴盤苗,秋季育苗期中, Granex 429和 Superex的 128格穴盤苗雖仍大於 288格穴盤苗,但除了地 下部性狀外,差異呈現不顯著,406 格穴盤苗在育苗期與定植初期的植株 都比128和288格穴盤苗小。200和288格穴格容積對洋蔥苗的生長限制自播 種後45-55天內開始反映於外部形態,406格穴盤則早於播種後三週內即出 現。育苗期間 406格穴盤苗有較多的根數與定植後較高的相對生長率,但 定植後四週穴盤苗間的相對生長率即沒有顯著差異,且植株仍維持最小, 顯示移植障礙尚不足以抵銷苗株間的差異性。在採收時無論是成熟期、產 量或蔥球的整齊度與品質,育苗容積不同的128﹑200和288 格穴盤苗間都 沒有顯著的差異。葉鮮重、根乾重、葉數、葉長、根數、根長、假莖長、 假莖粗、徑頸比與苗株生長率10個洋蔥苗期性狀構成的苗株大小指標和根 系大小指標和其相對的定植初期與結球始期反應典型變項間可獲得各 為0.9634和0.7084的典型相關係數,變異解釋率分別為93.82%和50.18%。 指標數值的大小可作為洋蔥苗品質評定的參考。zh_TW
dc.description.abstractOnion seedlings raised in plug had larger size and better recovery after transplanting than control of seedlings grown in in field for 45 days. Bulb yield and uniformity of Granex 429 are improved by plug seedlings. Days to bulb onset are five days earlier in plug seedlings of Granex 429 than controls. Leaf weight ratio data showed plug seedling could shorten the days to harvest of Granex 429, but not for Superex. There is no signific- ant difference in earlyness and yield of Superex between seedling either raised in plugs or field, but plug seedling had higher percentage of bigger bulbs. Older plug seedlings had bigger size during nursery stage and after transplanting, but young seedlings were better in recovery . At harvest, 45 days old plug seedlings showed earlier maturity and less total yield than 55 days old seedlings in culitivar Granex 429 and Grano 502, but not significant in Superex. Science root development are restricted by plug size, seedlings raised in small plugs are smaller than raised in bigger plugs. Growth restricting is shown at the 45 to 55 days of 128 and 288 cells plug and three weeks in plug of 406 cells. No significant difference is observed between seedlings in 128, 200 and 406 plugs on maturity, yield, uniformity and quality of bulbs. Cannonical varables of onion seedling are consist of 10 characters ie. leaf fresh weight, root dry weight, leaf number, leaf length, root number, root number, root length, length of pseudostem, diameter of pseudostem, bulb ratio and seedling growth rate. The cannonical correlation coefficient between general plant size index, root size index and their paired cannonical variables described that the early stage of transplant -ing and bulbing are 0.9634 and 0.7084, the coefficient of determinate are 0.9282 and 0.5018 respectively. Theses two index could quantify and compare the quality of onion seedlings.en_US
dc.language.isoen_USzh_TW
dc.publisher園藝學系zh_TW
dc.subjectplugen_US
dc.subject洋蔥zh_TW
dc.subjectplug seedlingen_US
dc.subjectseedling ageen_US
dc.subjectearly maturityen_US
dc.subjectseedling qualityen_US
dc.subject穴盤育苗zh_TW
dc.subject苗齡zh_TW
dc.subject早熟性zh_TW
dc.subject苗株品質zh_TW
dc.subject限制根群zh_TW
dc.title育苗穴格容積和苗齡對洋蔥苗株品質與早熟性的影響zh_TW
dc.titleInfluence of seedling age and plug size on maturity and seedling quality of onion (Allium cepa L.)en_US
dc.typeThesis and Dissertationzh_TW
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