Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Yield loss caused by Pratylenchus thornei on wheat in South Australia
Autore:
Nicol, JM; Davies, KA; Hancock, TW; Fisher, JM;
Indirizzi:
CIMMYT, Wheat Program, Mexico City 06600, DF, Mexico CIMMYT Mexico City DF Mexico 06600 Program, Mexico City 06600, DF, Mexico Univ Adelaide, Dept Crop Protect, Glen Osmond, SA 5064, Australia Univ Adelaide Glen Osmond SA Australia 5064 en Osmond, SA 5064, Australia Univ Adelaide, Dept Plant Sci, Glen Osmond, SA 5064, Australia Univ Adelaide Glen Osmond SA Australia 5064 en Osmond, SA 5064, Australia
Titolo Testata:
JOURNAL OF NEMATOLOGY
fascicolo: 4, volume: 31, anno: 1999,
pagine: 367 - 376
SICI:
0022-300X(199912)31:4<367:YLCBPT>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
HETERODERA-AVENAE; P-THORNEI; PERFORMANCE; NEGLECTUS;
Keywords:
cereals; nematode; Pratylenchus thornei; resistance; root lesion nematodes; yield loss;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
37
Recensione:
Indirizzi per estratti:
Indirizzo: Nicol, JM CIMMYT, Wheat Program, Lisboa 27,Apartado Postal 6-641, Mexico City 06600,DF, Mexico CIMMYT Lisboa 27,Apartado Postal 6-641 Mexico City DF Mexico 06600
Citazione:
J.M. Nicol et al., "Yield loss caused by Pratylenchus thornei on wheat in South Australia", J NEMATOL, 31(4), 1999, pp. 367-376

Abstract

A two-year field trial with 130 plots was conducted at Tanunda, South Australia. Ten cereal cultivars differing in susceptibility to Pratylenchus thornei, two poor host crops (non-leguminous), and a bare fallow treatment were used to manipulate the numbers of nematodes in the plots in the first year. Initial and final densities were determined for each plot and varied from 0 to 9,400 nematodes/200 g oven-dried soil at the beginning of the secondyear. A highly susceptible wheat cultivar, Warigal, and two wheat lines known to have some resistance to P. thornei, GS50A and AUS4930, were planted in the second year. High densities of P. thornei caused more extensive lesions and severe cortical degradation in roots of Warigal than in GS50A or AUS4930. There was a significant linear relationship between initial density of P. thornei and Warigal grain yield (t/ha), with the estimated regressionequation Y = 1.86 - 0.0000557x, where Y is the grain yield in t/ha and x is the number of P. thornei/200 g oven-dried soil. High initial densities (9,000 P. thornei/200 g oven-dried soil) caused up to 27% yield loss of this commercial Australian wheat. In contrast, the yield of the two resistant lines was not affected by initial density, suggesting that both were tolerantas well as resistant in the field.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/12/20 alle ore 08:14:01