Data/hora: 08/06/2024 01:24:28

Biblioteca(s): | Embrapa Trigo.
Data corrente: | 06/12/2010
Data da última atualização: | 27/08/2013
Autoria: | KHAN, M. A.; TSUNODA, S.
Afiliação: | MUHAMMED AMIN KHAN; SHIGESABURO TSUNODA.
Título: | Growth analysis of cultivated wheat species and their wild relatives with special reference to dry matter distribution among different plant organs and to leaf area expansion.
Ano de publicação: | 1970
Fonte/Imprenta: | Tohoku Journal of Agricultural Research, Japan, v. 21, n. 2, p. 47-59, 1970.
Idioma: | Inglês
Conteúdo: | Variations in plant weight, LAR, RGR, leaf area, leaf dry weight, root dry weight, N content/unit leaf area, NAR, and the inter-relationships between these characters were investigated in 20 strains of Triticum and Aegilops, including different ploidy levels and winter and spring types with wild and cultivated growth habits. All diploid strains and a wild tetraploid strain (T. araraticum var. tumaniani) had lower seed weights and total dry weight/plant than tetra- or hexaploid strains. Winter types and wild types generally had lower leaf area: leaf dry weight ratios than spring types and lower leaf dry weight: root dry weight ratios than cultivated types. Leaf area: root weight ratio was also lower in winter types and wild types than in spring types and cultivated types. The diploid wild winter type of A. squarrosa showed the lowest and a hexaploid cultivated spring strain of T. vulgare the highest leaf area: root dry weight ratio. The relation between development of leaf area and root dry weight may have a bearing on the balance of photosynthesis and nutrient absorption as well as on the balance of transpiration and water absorption under different levels of temperature and moisture supply. Specific leaf weight on a dry weight basis, i.e. the reciprocal of leaf area: leaf dry weight ratio and N content/unit leaf area, were positively correlated with each other as well as with the calculated NAR.-F.A.S.
Palavras-Chave: | Componente de rendimento; Espécies afins.
Thesagro: | Trigo.
Categoria do assunto: | F Plantas e Produtos de Origem Vegetal
Registro original: | Embrapa Trigo (CNPT)
Exemplares: | CNPT - (41568-1) - ADD - SP - PP - 15826 -  - 15826 - DIS