{"title":"田间豌豆对15NO3的同化作用。","authors":"S. Atta, S. Maltese, P. Marget, R. Cousin","doi":"10.1051/AGRO:2004003","DOIUrl":null,"url":null,"abstract":"The objectives of this study were to determine the effect of low mineral supply on plant growth and the uptake and redistribution of mineral N by different plant organs according to the period of uptake. A glasshouse study was conducted on two pea genotypes, L833 and cv. Frisson, fed without or with 4 mM NO 3 . Plants fed with 4 mM N were labelled for 5 days with 15 N at three stages: 7 leaf stage, beginning of flowering, and beginning of seed filling. Plants were harvested at day 6 and at later stages. The results indicated for the two genotypes that supplying 4 mM N to the plants significantly increased their total dry weight up to the beginning of seed filling, whereas nodule dry weight was reduced. Genotype differences in N uptake and redistribution among plant organs were minor. When plants were labelled with 15 N at early stages of growth, about 60% of total plant 15 N was located in leaves. At maturity the proportion of 15 N recovered in seeds was about 60% for both genotypes. When plants were labelled at the beginning of seed filling, 15 N was mainly located in young organs such as upper leaves, pods and seeds. During seed fill the remobilisation of 15 N to seeds occurred from all organs of the plant. At physiological maturity about 70% of 15 N was located in seeds.","PeriodicalId":7644,"journal":{"name":"Agronomie","volume":"52 1","pages":"85-92"},"PeriodicalIF":0.0000,"publicationDate":"2004-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"11","resultStr":"{\"title\":\"15NO3 assimilation by the field Pea Pisum sativum L.\",\"authors\":\"S. Atta, S. Maltese, P. Marget, R. Cousin\",\"doi\":\"10.1051/AGRO:2004003\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The objectives of this study were to determine the effect of low mineral supply on plant growth and the uptake and redistribution of mineral N by different plant organs according to the period of uptake. A glasshouse study was conducted on two pea genotypes, L833 and cv. Frisson, fed without or with 4 mM NO 3 . Plants fed with 4 mM N were labelled for 5 days with 15 N at three stages: 7 leaf stage, beginning of flowering, and beginning of seed filling. Plants were harvested at day 6 and at later stages. The results indicated for the two genotypes that supplying 4 mM N to the plants significantly increased their total dry weight up to the beginning of seed filling, whereas nodule dry weight was reduced. Genotype differences in N uptake and redistribution among plant organs were minor. When plants were labelled with 15 N at early stages of growth, about 60% of total plant 15 N was located in leaves. At maturity the proportion of 15 N recovered in seeds was about 60% for both genotypes. When plants were labelled at the beginning of seed filling, 15 N was mainly located in young organs such as upper leaves, pods and seeds. During seed fill the remobilisation of 15 N to seeds occurred from all organs of the plant. At physiological maturity about 70% of 15 N was located in seeds.\",\"PeriodicalId\":7644,\"journal\":{\"name\":\"Agronomie\",\"volume\":\"52 1\",\"pages\":\"85-92\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2004-03-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"11\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Agronomie\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1051/AGRO:2004003\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Agronomie","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1051/AGRO:2004003","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 11
摘要
本研究的目的是确定低矿物质供应对植物生长的影响,以及不同植物器官对矿物质氮的吸收和再分配。对L833和cv两个豌豆基因型进行了温室试验。弗里松,不加或加4毫米NO . 3。饲喂4 mM N的植株,在7叶期、开花期和灌浆期3个阶段用15 N标记5 d。在第6天和后期收获植株。结果表明:补给量为4mm N的2个基因型植株灌浆前总干重显著增加,而根瘤干重显著降低;植物各器官间氮素吸收和再分配的基因型差异较小。当植株在生长早期施用15n时,植株总15n的约60%分布在叶片中。成熟时,两种基因型籽粒中15n的回收率均在60%左右。在灌种初期对植株进行标记时,15n主要分布在上部叶片、豆荚和种子等幼嫩器官中。在补种过程中,植株各器官向种子再输送15n。生理成熟时,约70%的15n分布在种子中。
15NO3 assimilation by the field Pea Pisum sativum L.
The objectives of this study were to determine the effect of low mineral supply on plant growth and the uptake and redistribution of mineral N by different plant organs according to the period of uptake. A glasshouse study was conducted on two pea genotypes, L833 and cv. Frisson, fed without or with 4 mM NO 3 . Plants fed with 4 mM N were labelled for 5 days with 15 N at three stages: 7 leaf stage, beginning of flowering, and beginning of seed filling. Plants were harvested at day 6 and at later stages. The results indicated for the two genotypes that supplying 4 mM N to the plants significantly increased their total dry weight up to the beginning of seed filling, whereas nodule dry weight was reduced. Genotype differences in N uptake and redistribution among plant organs were minor. When plants were labelled with 15 N at early stages of growth, about 60% of total plant 15 N was located in leaves. At maturity the proportion of 15 N recovered in seeds was about 60% for both genotypes. When plants were labelled at the beginning of seed filling, 15 N was mainly located in young organs such as upper leaves, pods and seeds. During seed fill the remobilisation of 15 N to seeds occurred from all organs of the plant. At physiological maturity about 70% of 15 N was located in seeds.