Different types of resistance against greenbug, <i>Schizaphis graminum</i> Rond, and the Russian wheat aphid, <i>Diuraphis noxia</i> Mordvilko, in wheat

Castro, Ana María; Vasicek, A.; Ramos, Silvina Gabriela; Worland, A. J.; Suarez, Enrique; Muñoz, Macarena; Giménez, Daniel; Clúa, A.

doi:10.1046/j.1439-0523.1999.118002131.x

Cited by 21 publications

(17 citation statements)

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“…These were reared on a susceptible barley cultivar (ÔBordenave RanquelinaÕ) and a wheat cultivar (ÔBuck Ombu´Õ), under natural conditions at La Plata (36°36¢ S.L.). The clone used has been characterized as biotype C (Castro et al 1999). Russian wheat aphids (RWAs), Diuraphis noxia Mordvilko, were also collected on T. turgidum conv.…”

Section: Methodsmentioning

confidence: 99%

“…Greenbug and the Russian wheat aphid (RWA) are two serious insect pests of wheat, causing heavy losses in many countries (Hill et al 1993, Dong et al 1997. Although these aphids can be controlled by the application of pesticides, the breeding of genetic resistance can, and has been, used extensively (Castro et al 1999). Six genes for resistance have been introduced into wheat to control greenbug, and another nine to control RWA (Worland and Snape 2001).…”

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confidence: 99%

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Mapping quantitative trait loci in wheat for resistance against greenbug and Russian wheat aphid

et al. 2004

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Breeding for genetic resistance against greenbug and Russian wheat aphid (RWA) is the most effective way of controlling these widespread pests in wheat. Earlier work had shown that chromosome 7D of a synthetic hexaploid wheat, ÔSyntheticÕ (T. dicoccoides · Ae. squarrosa) (AABB · DD) gave resistance when transferred into the genetic background of an aphid-susceptible cultivar, ÔChinese SpringÕ, as the recipient. To map the genes involved, a set of 103 doubled haploid recombinant substitution lines was obtained from crossing the 7D substitution line with the recipient, and used to determine the number and chromosomal location of quantitative trait loci (QTL) controlling antixenosis and antibiosis types of resistance. Antixenosis to RWA was significantly associated with marker loci Xpsr687 on 7DS, and Xgwm437 on 7DL. Antibiosis to greenbug was associated with marker loci Xpsr490, Rc3 (on 7DS), Xgwm44, Xgwm111, Xgwm437, Xgwm121 and D67 (on 7DL). Similarly, antibiosis to RWA was linked to loci Xpsr490, Rc3, Xgwm44, Xgwm437 and Xgwm121. At least two QTL in repulsion phase, one close to the centromere either on the 7DS or 7DL arms, and a second distal on 7DL could explain antibiosis to RWA and, partially, this mechanism against greenbug.

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Mapping quantitative trait loci in wheat for resistance against greenbug and Russian wheat aphid

et al. 2004

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“…However, antixenosis, or non-preference, could comprise an additional component of resistance that has not yet been exploited, even though it has been identified in a number of wheat cultivars. For example, Castro et al (1999) found that eight out of 26 tested wheat cultivars showed antixenosis. Similarly Miller et al (2003), observed antixenosis to D. noxia in PI 222668 and PI 372129.…”

Section: Introductionmentioning

confidence: 99%

Differential colonization of wheat cultivars by two biotypes of Russian wheat aphid (Homoptera: Aphididae)

2005

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Susceptible and resistance wheat cultivars, Triticum aestivum L, were presented to two biotypes of Russian wheat aphid, Diuraphis noxia (Mordvilko), in multiple choice tests to assay their relative acceptability as host plants. Both apterae (third and fourth instars) and alate adults were offered plants at the two-leaf stage in different cultivar combinations at 22 1 and 16: 8 (L: D) hour photoperiod. Apterae were released from Petri dishes in the center of a circle of test plants, whereas alatae dispersed from a mature aphid colony to settle on plants arranged in rows. Both alatae and apterous nymphs of both biotypes readily colonized all cultivars tested: 2137 , Akron , Ankor , Halt , Jagger , Prairie Red , Stanton , TAM107 , TAM110 , Trego , Yuma , and Yumar . Fewer biotype 1 apterae responded (settled and fed) in the combination containing more resistant (Dn4-and Dny-expressing) cultivars, compared to the combinations that had fewer. The reverse was true for biotype 2 apterae; more aphids responded in the combination containing the largest number of Dn4 expressing cultivars. Differential colonization of cultivars was observed in only one combination, in which biotype 2 apterae colonized Akron and Yumar in larger numbers than they did Stanton and Yuma. A separate experiment confirmed that, 48 hours after infestation, more biotype 2 apterae abandoned plants of Yuma than plants of Yumar. This differential response was likely due to genetic differences between the two near isogenic lines that include the lack of Dn4 expression in Yuma. Choice tests with alatae did not result in differential rates of cultivar colonization by either biotype in any combination tested. These results suggest that young wheat plants appear to lack any meaningful antixenosis toward D. noxia, even though the aphids appear to perceive, and sometimes respond to, certain differences in cultivar suitability.

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“…This species was first found in Chile in 1988 and in Argentina in 1992 (Ortego & Delfino, 1994). It was found in the main cereal producing region of Argentina, south of Buenos Aires province, in 1994(Bellone & Almaraz, 1995, and then spread northwards and eastwards infesting barley and wheat (Triticum aestivum and T. durum) in 1995 (Castro et al, , 2001. Parasitoids and chemicals failed to control this pest, possibly because it causes the leaves to curl tightly, which protects the enclosed aphids (Burd et al,1998).…”

Section: Introductionmentioning

confidence: 99%

The biological characteristics and distribution of the greenbug, Schizaphis graminum, and Russian wheat aphid, Diuraphis noxia (Hemiptera: Aphididae), in Argentina and Chile

Clua¹,

Castro²,

Ramos³

et al. 2004

Eur. J. Entomol.

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Abstract. The aphids Schizaphis graminum (Rondani) (greenbug) and Diuraphis noxia (Mordvilko) (Russian wheat aphid, RWA) were collected from several localities in Argentina and Southern Chile. Clones were established from aphids collected at each location. The host preferences were studied in free choice tests. Biotypes were characterized on the basis of aphid antibiosis and host plant tolerance. The production of sexuals was assessed under natural conditions, from March to November in 1997-2001, at La Plata (34°55' S, 57°57' W). The greenbug distribution ranged from 24°40' to 43°28' S, and was bounded between isothermals 18-20°C and 8-10°C, and isohyets 400-600 mm and greater than 1200 mm. The aphids at all localities were collected from a wide range of cultivated and wild hosts. The biotypes in ten out of thirty-four populations were identified. One population was obligatorily parthenogenetic, the remainder cyclically parthenogenetic. No correlation was found between the region they came from and the period required for the induction of sexuals. RWA was found between 26°50´ and 43°28´S, bounded by the isothermals 20-22°C and 8-10°C, and isohyets 400-600 mm and 2000 mm. In Chile, this aphid was only found in Osorno County, which lies on isothermal 8-10°C and is bounded by the isohyets 1000 mm and 2000 mm. Only a few RWA genotypes (clones) produced sexuals irrespective of the host they were collected from, period of the year, region, current host, or the day length and average temperature of the rearing conditions. For the first time, RWA was found infesting cultivated as well as wild oats in South America. At low latitudes, populations of both aphid species were found only infesting wild Sorghum halepensis (L).

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Different types of resistance against greenbug, Schizaphis graminum Rond, and the Russian wheat aphid, Diuraphis noxia Mordvilko, in wheat

Cited by 21 publications

References 21 publications

Mapping quantitative trait loci in wheat for resistance against greenbug and Russian wheat aphid

Mapping quantitative trait loci in wheat for resistance against greenbug and Russian wheat aphid

Differential colonization of wheat cultivars by two biotypes of Russian wheat aphid (Homoptera: Aphididae)

The biological characteristics and distribution of the greenbug, Schizaphis graminum, and Russian wheat aphid, Diuraphis noxia (Hemiptera: Aphididae), in Argentina and Chile

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