Leaf Pubescence Effects in Wheat on Yellow Sugarcane Aphids and Greenbugs (Homoptera: Aphididae)

Webster, James; Inayatullah, C.; Hamissou, Mijitaba; Mirkes, K. A.

doi:10.1093/jee/87.1.231

Cited by 35 publications

(16 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The photon ßux density in the laboratory at plant level was 8.8 mole photon m 2 s 1 during the 48 h of the test. The test was conducted according to the procedure outlined by Webster et al (1994), except the second fully expanded leaf from a whole plant was used instead of detached leaf sections. Twenty adult apterous GBEs were released in the petri dish containing the test leaves from the four entries and allowed to settle on the leaf of their choice.…”

Section: Methodsmentioning

confidence: 99%

Plant Resistance Components of Two Greenbug (Homoptera: Aphididae) Resistant Wheats

Webster¹,

Porter²

2000

Self Cite

View full text Add to dashboard Cite

Several biotypes of the greenbug, Schizaphis graminum (Rondani), attack winter wheat, Triticum aestivum L., on the Southern Plains every year. Two wheat germplasm sources of resistance ('Largo' and 'GRS 1201') have been developed that provide protection against the three predominant greenbug biotypes (E, I, and K). Each source has agronomic and end-use quality advantages and disadvantages for the breeder to consider in choosing a greenbug-resistant breeding line. We compared these two germplasms to determine their levels of resistance against biotype E. Components of resistance (i.e., antibiosis, antixenosis, and tolerance) were measured on seedlings of GRS 1201, Largo, and 'TAM W-101' (a susceptible control). Several aphid and plant measurements (e.g., total number of aphids produced per plant, aphid selection preferences, and plant damage ratings) were recorded for each plant entry. Select data recorded for each resistance component were normalized and combined to derive a plant resistance index for each wheat entry. Results indicated that GRS 1201 had a higher level of combined resistance components than did Largo, followed by TAM W-101, the susceptible control. These data provide additional information for the breeder to consider in selecting a greenbug-resistant breeding line.

show abstract

Section: Methodsmentioning

confidence: 99%

Plant Resistance Components of Two Greenbug (Homoptera: Aphididae) Resistant Wheats

Webster¹,

Porter²

2000

Self Cite

View full text Add to dashboard Cite

show abstract

“…However, they were separated by a distance of 14.6 cM, and classification of RILs based on pubescence data showed no effect on antibiosis to R. padi. Some studies (Roberts and Foster 1983;Webster et al 1994), but not all (Webster 1990;Papp and Mesterhazy 1993), have suggested that one possible cause for aphid resistance in wheat is the presence of trichomes in leaves. However, in our study neither R. padi nor S. graminum resistance was related to such a plant trait.…”

Section: Discussionmentioning

confidence: 99%

Mapping resistance to the bird cherry-oat aphid and the greenbug in wheat using sequence-based genotyping

et al. 2014

View full text Add to dashboard Cite

“…The arenas used and methods performed for the antixenosis experiments were similar to those described by Webster et al (1994) for the antixenosis tests on the yellow sugarcane aphid, Sipha flava (Forbes), except that the leaves used in the arenas were not excised from the plants. One plant of each cultivar was arranged around an arena with the youngest unfurled leaf used in the arena.…”

Section: Yield Response To Russian Wheat Aphid Infestationmentioning

confidence: 99%

Yield Response and Categories of Resistance to Russian Wheat Aphid in Four <I>Dn</I>4 Hard Red Winter Wheat Cultivars

Randolph¹,

Peairs²,

Koch³

et al. 2005

View full text Add to dashboard Cite

A field experiment was conducted to determine whether resistance to Russian wheat aphid, Diuraphis noxia (Mordvilko), conferred by the Dn4 gene is affected by genetic background. This was done by comparing the yield responses to Russian wheat aphid-resistant wheat containing Dn4, derived through the backcross method, to those of the corresponding recurrent parents. Infested resistant cultivars had fewer Russian wheat aphids per tiller than infested susceptible cultivars at the Lamar and Fort Collins, CO sites but not at the Akron, CO site. At the Lamar site, resistant cultivars yielded more than the susceptible cultivars. 'Prairie Red' and 'Yumar' were more resistant than 'Prowers', especially at the higher infestation level. Resistance in these cultivars was categorized in a laboratory experiment to confirm this differential expression of resistance. Resistance in Prairie Red, 'Halt', 'Prowers 99', and Yumar was categorized at three plant growth stages. Antibiosis was expressed as reductions in maximum number of nymphs produced per 24 h and intrinsic rate of increase. The maximum number of nymphs produced per 24 h was reduced in Halt and 'Lamar'. Averaged over cultivars, the intrinsic rate of increase was less at jointing than at the seedling or tillering growth stages. Tolerance was expressed in the resistant cultivars as reduced chlorosis and leaf rolling. Growth reductions in infested Prowers 99 plants was less than the other cultivars. This study confirms that some cultivars containing Dn4 may express antibiosis and tolerance, whereas others may not show the same categories. Thus, expression is affected by genetic background.

show abstract

Leaf Pubescence Effects in Wheat on Yellow Sugarcane Aphids and Greenbugs (Homoptera: Aphididae)

Cited by 35 publications

References 0 publications

Plant Resistance Components of Two Greenbug (Homoptera: Aphididae) Resistant Wheats

Plant Resistance Components of Two Greenbug (Homoptera: Aphididae) Resistant Wheats

Mapping resistance to the bird cherry-oat aphid and the greenbug in wheat using sequence-based genotyping

Yield Response and Categories of Resistance to Russian Wheat Aphid in Four <I>Dn</I>4 Hard Red Winter Wheat Cultivars

Contact Info

Product

Resources

About