|
Registro Completo |
|
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 |
|
Marc: |
LEADER 02022naa a2200169 a 4500
001 1868701
005 2013-08-27
008 1970 bl --- 0-- u #d
100 1 $aKHAN, M. A.
245 $aGrowth 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.
260 $c1970
520 $aVariations 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.
650 $aTrigo
653 $aComponente de rendimento
653 $aEspécies afins
700 1 $aTSUNODA, S.
773 $tTohoku Journal of Agricultural Research, Japan$gv. 21, n. 2, p. 47-59, 1970.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Trigo (CNPT) |
|
