Temperature and Root Exudates On the Cereal Cyst-Nematode Heterodera Avenae

Willliams, T.D.; Beane, J.

doi:10.1163/187529279x00569

Cited by 11 publications

(6 citation statements)

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“…The lack of increased total hatch due to root diffusates is similar to the results obtained by Fisher and Hancock (1991), who did not find an increase of total hatch of H. avenae in root diffusates. Williams and Beane (1979) found a slight increase in hatch of H. avenae from England in response to root diffusate in experiments lasting for 35 weeks.…”

Section: Discussionmentioning

confidence: 88%

“…English populations hatched best at 10 • C (Williams & Beane, 1979). McLeod et al (1986) reported the optimal hatching of H. avenae at temperatures of 5 and 10 • C for North Australian populations.…”

Section: Discussionmentioning

confidence: 97%

“…Several authors have investigated the hatching of the cereal cyst nematode H. avenae (Banyer & Fisher, 1971a, b;Rivoal, 1978Rivoal, , 1979Williams & Beane, 1979;Valdeolivas & Romero, 1986;Rao & Dhawan, 1988;Zancada & Sanchez, 1988) but the life cycle and hatching behaviour of H. latipons has not been investigated thorand the one used to separate the area into four agroecological zones: A, with an average annual rainfall above 350 mm (wheat dominated rotations); B, 250-350 mm (wheat and barley dominated rotations); C, 200-250 mm (barley monoculture and rotations); and D, below 200 mm (barley-fallow systems) (Ryan et al, 1997).…”

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confidence: 99%

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Hatching behaviour and life cycle of Heterodera latipons Franklin under Syrian agro-ecological conditions

Scholz¹,

Sikora²

2004

Nematol

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The cereal cyst nematode Heterodera latipons Franklin is widespread in the eastern Mediterranean area and often occurs in mixed populations with H. avenae in cereal cropping systems. Differences between the two species in hatching behaviour and development cycle may be factors responsible for the low level of detection of H. latipons in the region. The aim of this study was to investigate the influence of different temperature regimes, agro-ecosystem, sampling date, cyst age and barley root diffusate on the hatching behaviour of H. latipons and its life cycle. The investigations were conducted by observing hatch and development under both field and glasshouse conditions. The optimum temperature for hatching was 10 • C. The hatched second-stage juveniles of H. latipons from the dry and wet agro-ecological zones are found in the soil from December to April with peak densities in January and February. Thirty to 45% of the eggs of both populations from the dry and wet zone hatch slowly over the growing season. The results of hatching tests, simulating pre-planting soil temperatures in Syria, indicate that treatment for 16 days at 5 • C initiates the hatching cycle of H. latipons. There was no significant difference in total hatch when cysts were placed in tap water or in barley root diffusates.

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Section: Discussionmentioning

confidence: 88%

Section: Discussionmentioning

confidence: 97%

mentioning

confidence: 99%

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Hatching behaviour and life cycle of Heterodera latipons Franklin under Syrian agro-ecological conditions

Scholz¹,

Sikora²

2004

Nematol

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“…Hatching is stimulated in some species (G. rostochiensis) by substances contained in leachates of plant roots. Although the stimulus of host plant root leachates is not essential for the hatching of most species of Heterodera, their presence increases hatch substantially (Winslow 1955;Williams and Beane 1972;Perry 1987;Hashmi and Krusberg 1995).…”

Section: Introductionmentioning

confidence: 99%

“…plant root leachates have been demonstrated to stimulate egg hatching in many species of cyst nematodes (Fenwick 1949; Williams and Beane 1972;Beane and Perry 1983;Teft and Bone 1985;Perry 1987;Schmitt and Riggs 199 1 ; The protocol for culture, isolation, and storage of cysts for hatching and Krusberg 1995). experiments is the same as described previously (Hashmi et al ~h~ bioactive substance(s) responsible for stimulating the 1993; Hashmi and Krusberg 1995).…”

Section: Introductionmentioning

confidence: 99%

Hatching factor(s) in corn seedling leachate for the eggs of Heterodera zeae

Hashmi¹,

Krusberg²,

Jarvis³

1996

Can. J. Zool.

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Evidence is presented for the presence of a hatching factor or factors in corn seedling leachates that enhances egg hatching in Heterodera zeae. This study was undertaken to gain information on selected characteristics of the hatching factor(s). Fresh corn seedling leachates were heat-and storage-stable. The hatching factor partitioned into diethyl ether but not into hexane or chloroform.RCsumC : Nous prCsentons ici des preuves de l'existence d'un facteur ou de facteurs d'eclosion dans les produits de lessivage de graines de mays, produits qui favorisent 1'Cclosion des oeufs de Heterodera zeae. Cette Ctude a Ct C entreprise dans le but de jeter de la lumikre sur des caractkristiques particulikres du ou des facteur(s) d'Cclosion. Lea produits de lessivage des graines de mays sont stables a la chaleur et aprks la mise en stockage. Le facteur d'Cclosion se dissocie en Cther dikthylique, mais ne donne ni hexane, ni chloroforme. [Traduit par la ~Cdaction]

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Chemical Signals in the Plant—Nematode Interaction

Gheysen

1998

Phytochemical Signals and Plant—Microbe Interactions

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Temperature and Root Exudates On the Cereal Cyst-Nematode Heterodera Avenae

Cited by 11 publications

References 0 publications

Hatching behaviour and life cycle of Heterodera latipons Franklin under Syrian agro-ecological conditions

Hatching behaviour and life cycle of Heterodera latipons Franklin under Syrian agro-ecological conditions

Hatching factor(s) in corn seedling leachate for the eggs of Heterodera zeae

Chemical Signals in the Plant—Nematode Interaction

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