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Titolo:
Relationships between early vigour, grain yield, leaf structure and stableisotope composition in field grown barley
Autore:
Bort, J; Araus, JL; Hazzam, H; Grando, S; Ceccarelli, S;
Indirizzi:
Univ Barcelona, Fac Biol, Unit Fisiol Vegetal, E-08028 Barcelona, Spain Univ Barcelona Barcelona Spain E-08028 Vegetal, E-08028 Barcelona, Spain Int Ctr Agr Res Dry Areas, Aleppo, Syria Int Ctr Agr Res Dry Areas Aleppo Syria Agr Res Dry Areas, Aleppo, Syria
Titolo Testata:
PLANT PHYSIOLOGY AND BIOCHEMISTRY
fascicolo: 12, volume: 36, anno: 1998,
pagine: 889 - 897
SICI:
0981-9428(199812)36:12<889:RBEVGY>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
WATER-USE EFFICIENCY; MEDITERRANEAN-TYPE ENVIRONMENT; RAIN-FED ENVIRONMENTS; TEMPERATE CEREALS; WHEAT; DISCRIMINATION; AREA; ADAPTATION; CULTIVARS; SOIL;
Keywords:
chlorophyll content; early vigour; phenology; specific leaf dry weight; stable isotopes composition; yield; Hordeum vulgare;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
40
Recensione:
Indirizzi per estratti:
Indirizzo: Araus, JL Univarcelona,a, Fac Biol, Unit Fisiol Vegetal, Avda Diagonal 645, E-08028 B Univ Barcelona Avda Diagonal 645 Barcelona Spain E-08028 8028 B
Citazione:
J. Bort et al., "Relationships between early vigour, grain yield, leaf structure and stableisotope composition in field grown barley", PL PHYS BIO, 36(12), 1998, pp. 889-897

Abstract

Fast growth and early development in barley are used in breeding programmes to improve the water use efficiency and transpiration efficiency of this crop in Mediterranean conditions. Here, we examine the use of several simple traits based on the structure and stable isotope composition of seedling leaves to assess differences in early vigour, phenology and grain yield, and also the interaction with low temperatures in barley. A set of 260 F-8 lines of two-row barley (Hordeum vulgare L.) derived from the cross of Tadmorand WI 2291 were cultivated in two locations in northwest Syria. Total chlorophyll content on an area basis (SPAD) and specific leaf dry weight (SLDW) were measured in recently fully expanded intact leaves of seedlings. Total leaf area and total dry weight per seedling were evaluated in the same seedlings. The stable isotope compositions of carbon and nitrogen (delta(13)Cand delta(15)N, respectively) were analyzed in the same leaves on a subsetof 75 genotypes. Number of days from planting to heading and grain yield were recorded at both sites. The grain yield measured at both locations was positively correlated with the SPAD value of seedlings, but showed no relationship with SLDW. Days to heading was negatively correlated with SPAD values. Regarding early vigour, a negative relationship between the SLDW and the total leaf area of seedlings was observed. However, no relationship between the delta(13)C of seedlings and early vigour was observed, except when only the genotypes most resistant to low temperatures (i.e. showing the highest SPAD values) were considered. This subset of genotypes showed negative relationships between delta(13)C and either total leaf area or total dry weight. In addition, delta(15)N was negatively correlated with SPAD only within the high-SPAD genotypes. This suggests that within the genotypes resistant to low temperatures, those with higher chlorophyll content assimilate more nitrogen from nitrate. (C) Elsevier, Paris.

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Documento generato il 24/11/20 alle ore 22:02:50