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Titolo:
Damage and reproduction potentials of Heterodera avenae on wheat under outdoor conditions
Autore:
Al-Hazmi, AS; Al-Yahya, FA; Abdul-Razig, AT;
Indirizzi:
King Saud Univ, Dept Plant Protect, Riyadh 11451, Saudi Arabia King Saud Univ Riyadh Saudi Arabia 11451 ect, Riyadh 11451, Saudi Arabia
Titolo Testata:
JOURNAL OF NEMATOLOGY
fascicolo: 4, volume: 31, anno: 1999, supplemento:, S
pagine: 662 - 666
SICI:
0022-300X(199912)31:4<662:DARPOH>2.0.ZU;2-H
Fonte:
ISI
Lingua:
ENG
Keywords:
cereal cyst nematode; growth; Heterodera avenae; nematode; pathogenicity; reproduction; Triticum aestivum; wheat; yield;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
26
Recensione:
Indirizzi per estratti:
Indirizzo: Al-Hazmi, AS King Saud Univ, Dept Plant Protect, Box 2460, Riyadh 11451, Saudi Arabia King Saud Univ Box 2460 Riyadh Saudi Arabia 11451 udi Arabia
Citazione:
A.S. Al-Hazmi et al., "Damage and reproduction potentials of Heterodera avenae on wheat under outdoor conditions", J NEMATOL, 31(4), 1999, pp. 662-666

Abstract

Two pot experiments, in consecutive years, were conducted under outdoor conditions during the wheat growing season to examine the relationship between increasing initial population densities (Pi: 0-3,000 cysts/pot) of Heterodera avenae and corresponding responses of wheat cv. Yecora Rojo. Results of both experiments were very similar. The nematode suppressed plant height,root and biomass dry weights, and grain yield at all Pi's studied. The suppression of these parameters, as well as the final nematode population densities (Pf), increased with increasing Pi levels. The reproduction factor (Pf/Pi) decreased as Pi increased but was always greater than 1.0. When data from both experiments were combined for regression analyses, inverse relationships were found between log,, (Pi + 1) and both plant growth and yield. These negative relationships were highly significant and adequately described by linear models. Final population (Pf) increased linearly with Pi. The wheat cultivar cv. Yecora Rojo was found to be highly vulnerable to damage and a good host for H. avenae.

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Documento generato il 02/12/20 alle ore 07:34:14