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題名 | 豌豆產量生理研究(2)--生育期間氮素與非構造性碳水化合物含量之變化=Studies on the Yield Physiology of Garden Pea (Pisum sativum L.)(2)--Status of N and Total Nonstructural Carbohydrates during Development |
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作者姓名(中文) | 陳阿善; 劉大江; 曹幸之; 張武男; | 書刊名 | 中華農學會報 |
卷期 | 174 1996.06[民85.06] |
頁次 | 頁44-55 |
分類號 | 434.236 |
關鍵詞 | 豌豆; 氮素; 非構造性碳水化合物; 供源; 積儲; Pea; Pisum sativum L.; Nitrogen; Total nonstructural carbohydrates; Source; Sink; |
語文 | 中文(Chinese) |
中文摘要 | 本試驗採用豌豆嫩莢用品種臺中11號與臺中12號、甜脆型品種新珍及豆仁用品種青仁為材料,於民國77年秋作在田間栽培,分析生育期間之氮素及非構造性碳水化合物(TNC)累積與分配性狀,特別著重莢果充實過程中的供源與積儲關係研究,藉以瞭解豌豆品種之產量生理表現。豌豆植株各器官之氮素濃度在生育期間逐漸下降,總含氮量則有增加;植株在莢果形成前之氮素累積量僅為最終含量之25-40%,亦即莢果形成以後之氮素同化能力極為重要。植株自莢果進入快速充實期以後所累積之氮素量僅足以供應種子所需氮素之70%左右,亦即種子所含氮素中約有30%係自營養器官再轉移而來,顯示氮素供源能力不足。豌豆之氮素收穫指數介於0.58至0.67之間。葉片與莖在生育全期之TNC濃度多在10%以下,含量亦低,並不具有明顯的貯藏碳水化合物功能。營養器官TNC含量遠低於種子TNC含量,並非種子充實所需碳素之重要來源,亦即種子充實主要依賴現行光合產物供應。豌豆在種子成熟期以莢果為基準之TNC收穫指數高達0.92-0.96,推測光合物質供源能力亦有不足的可能。 |
英文摘要 | Pea cultivars Taichung 11, Taichung 12, Sugar Snap and Dark Skinned Perfection, representing three different types of the crop, were grown in the fall crop of 1988. Concentrations of N and total nonistructural carbohydrates (TNC) in different plant organs were analyzed at intervals throughout the whole growth course, with special emphasis on the balance of source-sink relationship during pod-filling stage. Nitrogen concentration in various organs decreased whereas N amount per plant increased during the development of pea plant. Only 25 to 40% of total N was accumulated by the plant prior to pod development indicating the importance of N assimilation ability during the pod-filling period. However, N amount acquired by pea plant during pod-filling was equivalent to only 70% of the seed N, i.e., about 30% of seed N was redistributed from vegetative organs. The limitation of N source ability was therefore proposed. Harvest N indexes for pea cultivars ranged from 0.58 to 0.69. Concentrations of TNC in the vegetative organs were lower than 10% during most of the developmental period. This, associated with the low TNC amount indicated that leaves and stem did not function as storage organs of photosynthetic production and seed-filling depended principally on the concurrent photosynthesis. Harvest TNC indexes ranged from 0.92 to 0.96 for Taichung 11 and 12 and Dark Skinned perfection, implying pod yield might be limited by source ability. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。