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Titolo:
Quantification of vascular tissues in the peduncle of durum wheat cultivars improved during the twentieth century
Autore:
Lopez-Garrido, E; Molina-Quiros, S; De la Puerta-Lopez, PG; Vidal-Bernabe, MD; Garcia-Del-Moral, LF;
Indirizzi:
Univ Granada, Fac Ciencias, Dept Biol Celular, E-18071 Granada, Spain UnivGranada Granada Spain E-18071 Biol Celular, E-18071 Granada, Spain Univ Granada, Fac Ciencias, Dept Biol Vegetal, E-18071 Granada, Spain UnivGranada Granada Spain E-18071 Biol Vegetal, E-18071 Granada, Spain
Titolo Testata:
INTERNATIONAL JOURNAL OF DEVELOPMENTAL BIOLOGY
, volume: 45, anno: 2001, supplemento:, 1
pagine: S47 - S48
SICI:
0214-6282(2001)45:<S47:QOVTIT>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
4
Recensione:
Indirizzi per estratti:
Indirizzo: Lopez-Garrido, E Univ Granada, Fac Ciencias, Dept Biol Celular, E-18071 Granada, Spain Univ Granada Granada Spain E-18071 18071 Granada, Spain
Citazione:
E. Lopez-Garrido et al., "Quantification of vascular tissues in the peduncle of durum wheat cultivars improved during the twentieth century", INT J DEV B, 45, 2001, pp. S47-S48

Abstract

The grain yield of wheat has augmented in the last century due mainly to the use of cultivars with increased higher yield capacity. This work analyzes if this genetic gains in yield has been accompanied by similar increases in the size of the vascular system in the stem. Significant differences were obtained for cultivars; and dates of genetic improvement both in the areaof the peduncle; area of the vascular tissues; and phloem and metaxylem areas. In spite of the large variations encountered for these characteristicsbetween cultivars, no clear association was encountered between the genetic improvement and the magnitude of the vascular system in the peduncle of the spike, indicating that the amount of phloem in the modern varieties seems to be sufficient to sustain the maximum rate of grain growth. Nevertheless, the existence of a great genotypic variation in the vascular tissues of the peduncle found in this study could permit to improve the phloem transport capacity in durum wheat in the future.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 27/11/20 alle ore 15:55:13