Sunflower breeding for resistance to the new broomrape race

Gontcharov, S. V.; Antonova, T.S.; Araslanova, N.M.

doi:10.2298/hel0440193g

Cited by 6 publications

(2 citation statements)

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“…As it was published earlier (Gontcharov et al, 2004), all VNIIMK-released and prospective inbred lines are susceptible to the Spanish broomrape (race F) with a single exception -the line VK-623. The number of broomrape plants on the roots of infested sunflower plantlets varied from 0.0 (VK-623) to more than 20 (SL-1) ( Table 1).…”

Section: Resultsmentioning

confidence: 89%

Sunflower breeding for resistance to the new broomrape race in the Krasnodar region of Russia

Gontcharov

2009

Helia

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Broomrape (Orobanche cumana Wallr.) is a parasitic plant, feeding on sunflower roots. In recent years some new, more aggressive broomrape races have been found in different parts of the world (Spain, Turkey, Romania, etc.). Soon afterwards they occurred in Russia and we started a special breeding program to control the parasites. A line (VK 623) resistant to race F was previously found among the lines from the VNIIMK breeding program. Several new prospective sunflower inbred lines with resistance to both broomrape races, E and F, were developed in a short time. Now they are being converted to cmslines. However, the recessive character of their resistance creates some difficulties in commercial sunflower hybrid breeding, so, to obtain new donors of resistance, the cultivated sunflower was crossed with H. tuberosus (used as pollinator).

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Section: Resultsmentioning

confidence: 89%

Sunflower breeding for resistance to the new broomrape race in the Krasnodar region of Russia

Gontcharov

2009

Helia

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“…In a re-examination by the same working group (Velasco et al, 2007), however, the resistance of the sunflower variety J1, derived from H. grosseserratus, proved to be digenic, the second gene being influenced by environmental factors. Resistant hybrids have also been released in Russia (Gontcharov et al, 2004) and in Turkey (Kaya et al, 2004). Resistant hybrids have also been released in Russia (Gontcharov et al, 2004) and in Turkey (Kaya et al, 2004).…”

Section: Sources Of Resistance Genesmentioning

confidence: 99%

Orobanche resistance in sunflower

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Wegmann

Ardelean

2008

Helia

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This report presents the current knowledge of Orobanche resistance in sunflower from the breeder's standpoint and from the biochemists' standpoint.The parasitic relations in Helianthus annuus / Orobanche cumana associations differ in many respect from relations of other Orobanche spp. and their hosts.A major difficulty for the breeder is the fast development of new pathotypes of Orobanche cumana, which overcome the resistance of newly developed sunflower lines. The basis of increasing aggressiveness of Orobanche cumana pathotypes is discussed. Nevertheless, there is still large potential for resistance breeding in the genus Helianthus, since very different resistance factors are already known or shall be elucidated.A survey is presented of known resistance factors, such as low stimulants, mechanical barriers and how they develop, phytoalexins, Orobanche seed germination inhibitors, inhibition of exoenzymes of the Orobanche radicles, in particular of polygalacturonase, which enables the penetration of Orobanche tissue into the host root along the middle lamellae. In this context an interesting new approach may be found in the polygalacturonase-inhibiting proteins occurring in cell walls, which inhibit the invasion of pathogenic fungi.The need for molecular biological studies will be stressed. Interdisciplinary collaboration of breeders with biochemists and molecular biologists may lead to more advanced breeding strategies.

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