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Titolo:
Effect of secondary salinization on photosynthesis in fodder oat (Avena sativa L.) genotypes
Autore:
Chatrath, A; Mandal, PK; Anuradha, M;
Indirizzi:
Indian Grassland & Fodder Res Inst, Div Crop Improvement, Jhansi 284003, Uttar Pradesh, India Indian Grassland & Fodder Res Inst Jhansi Uttar Pradesh India 284003 ndia
Titolo Testata:
JOURNAL OF AGRONOMY AND CROP SCIENCE-ZEITSCHRIFT FUR ACKER UND PFLANZENBAU
fascicolo: 1, volume: 184, anno: 2000,
pagine: 13 - 16
SICI:
0931-2250(200003)184:1<13:EOSSOP>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Soggetto:
GAS-EXCHANGE; SALINITY; GROWTH; RESPONSES; LEAVES;
Keywords:
carbon exchange rate; electrical conductivity; internal carbon dioxide concentration; oat; salinity; stomatal resistance; transpiration;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
14
Recensione:
Indirizzi per estratti:
Indirizzo: Chatrath, A Indian Grassland & Fodder Res Inst, Div Crop Improvement, Jhansi 284003, Uttar Pradesh, India Indian Grassland & Fodder Res Inst Jhansi Uttar Pradesh India 284003
Citazione:
A. Chatrath et al., "Effect of secondary salinization on photosynthesis in fodder oat (Avena sativa L.) genotypes", J AGRON CR, 184(1), 2000, pp. 13-16

Abstract

The effect of secondary salinization on photosynthesis was studied in fodder oat genotypes Kent, JHO-829, JHO-881, UPO-94 and OS-6 at the flower initiation stage. With an increase in the electrical conductivity (EC) of irrigation water, the net photosynthesis rate (P-N) and the transpiration rate (E) of all the genotypes decreased. The intercellular CO2 concentration (Ci)increased in all genotypes at 10 dS m(-1). Stomatal resistance (R-s) had astrong negative correlation with PN and E. The increase in Ci together with the increase in the R-s shows that at higher EC non-stomatal factors alsostart contributing to the limitation of photosynthesis. This study suggests that secondary salinization effects are strongly under stomatal control at lower saline water irrigation levels, but at higher levels non-stomatal factors may come into play.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 03/12/20 alle ore 12:51:47