Field evaluation of yield effects on the U.S.A. heirloom sweetpotato cultivars infected by Sweet potato leaf curl virus

Ling, Kai‐Shu; Jackson, D. Michael; Harrison, Howard F.; Simmons, Alvin M.; Pesic‐VanEsbroeck, Zvezdana

doi:10.1016/j.cropro.2010.02.017

Cited by 45 publications

(43 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Current research has demonstrated significant benefits in yield and quality using pathogen-tested planting material when compared with farmers’ traditional non-tested material (Carey et al 1999; Fuglie et al 1999; Zhang and Salazar 2000; Carroll et al 2004). Moreover, high possibility of healthy materials necessitates the importance of continuous use of certified, virus-tested seed roots or cuttings (Ling et al 2010). …”

Section: Introductionmentioning

confidence: 99%

Elimination and detection of viruses in meristem-derived plantlets of sweetpotato as a low-cost option toward commercialization

et al. 2012

View full text Add to dashboard Cite

Viral diseases affecting sweetpotato are the most devastating and cause up to 98 % yield loss. In this paper, we report, meristem culture, graft transmission and virus indexing for management of viral pathogens in seven elite sweetpotato cultivars. Plantlets were developed in vitro from the apical meristematic dome with one to two leaf primordia. Mericlones were grafted on virus-sensitive indicator plant Ipomoea setosa and no viral disease symptoms were seen on I. setosa leaves in most cases. This indicates that no viruses translocated from meristem-derived scions to the virus-sensitive root stock. On the other hand, most of the non-tested traditional planting material induced distinct disease symptoms upon grafting, which revealed the presence of one or more viruses in it. About 85 % of mericlones recovered from 0.3–0.5 mm size meristem were tested as virus free, whereas it is difficult to culture meristems smaller than 0.3 mm due to dissection damage and too small a size. Virus-tested mericlones were further micropropagated and transferred to the field. Only few plants were found to be diseased in the R1 field trial. Root yield in the R2 generation was increased significantly when compared with non-tested control plants. During field exposure, only a low percentage of healthy plants were found infected with viruses when managed in a net house. This implies that viral vectors were present during the growing season and reinfection could be effectively reduced by net house management. We concluded that this low-cost technique of producing virus-tested planting material would significantly boost the yield through efficient removal of yield-reducing pathogens.

show abstract

Section: Introductionmentioning

confidence: 99%

Elimination and detection of viruses in meristem-derived plantlets of sweetpotato as a low-cost option toward commercialization

et al. 2012

View full text Add to dashboard Cite

show abstract

“…국내 주요 고구마 주산지 역의 바이러스 포장 발병율은 100%에 달하며, SPFMV가 43%로 가장 높은 감염을 보였고, sweet potato G virus (SPGV)를 비롯한 미동정 바이러스에도 감염된 것으로 나타 났다 (Chung, 2008). 대부분의 바이러스는 단독감염에서는 증상이 거의 없거나 약간의 증상만 나타날 뿐 수량감소는 나 타나지 않지만 (Untiveros et al, 2007), sweet potato leaf curl virus(SPLCV)나 SPCSV의 단독 감염에서는 수량감소가 크 게 나타나며 (Clark and Valverde, 2000;Gutierrez et al, 2003;Ling et al, 2010), 2종 이상의 복합감염에 의한 수량 감소 및 품질저하는 고구마 주산지역을 중심으로 심각한 경 제적 손실을 끼치고 있다 (Gutierrez et al, 2003;Untiveros et al, 2007). Cultivated soil(S) Planting source(P) Cultivar(C) S × P S × C P × C S × P × C * *** ** ns ns ns ns ns ns *** ns ns ns ns ns ns *** ns ns ns ns ns *** ns ** *** * ** * ** ns ns ns ns ns x CCS, continuous cropping soil over 5 years; SRS, subsoiling reversion soil over 70 cm.…”

unclassified

“…등의 다른 병해충에도 저항력이 증진되는 장점이 있다 (Yang et al, 1998). 고구마에 감염되는 SPFMV, SPVG, SPMMV 등은 단독감염에서는 수량 및 품질에 미치는 영향이 제한적 인 것으로 알려졌으나 (Clark and Hoy, 2006;Untiveros et al, 2007), SPCSV, SPLCV 등은 단독감염으로도 품종에 따라 10-80%의 수량감소를 초래하며 (Clark and Valverde, 2000;Gutierrez et al, 2003;Ling et al, 2010), 이들과 SPFMV, SPMMV 등과의 복합감염은 20-98% 수량감소와 상저수량 감소가 나타나므로 (Gibson et al, 1997;Untiveros et al, 2007) …”

unclassified

Effect of Virus-free Plant and Subsoiling Reversion Soil for Reduction of Injury by Continuous Cropping of Sweet Potato

송해안¹,

김갑철²,

이승엽³

2012

Korean Journal of Crop Science

View full text Add to dashboard Cite

To reduce the injury by continuous cropping of sweet potato (Ipomoea batatas (L.) Lam.), the farmer's plant and virus-free plant were cultivated with the density of 70×25 cm (June 10, 2011) in continuous cropping soil (CCS) and subsoiling reversion soil (SRS). Fertilizer was applied at the rates of 55-63-156 kg ha -1 (N-P 2 O 5 -K 2 O) and 10 ton ha -1 of cattle manure in CCS, and it was applied the 50％ increased cattle manure compost and nitrogen in DRS. Symptoms of viral infection were revealed in the farmer's plant at 30 days after planting, but there were no symptoms in virus-free plant. The yield of virus-free plant was more increased 15% and 10.5% than that of farmer's plant in DRS and CCS, respectively. The yield of sweetpotato in SRS was more increased 8.8% and 3.2% in farmer's plant and virus-free plant compared to CCS, respectively. In DRS, the rate of marketable tuber of virus-free plant was increased by 80% compared to the farmer's plant (60.1%). The virus-free plant was produced the tuber with more brilliant peel color and well-formed shape compared to the farmer's plant. The increased yield of virus-free plant and in SRS soil condition showed a positive relationship (p=0.05) with the number of leaf per plant at 30 days and the number of branch per plant at 120 days after planting. The results showed that the early growth after planting was very important for the development of storage root. Therefore, the deep-subsoil reversion and cultivation of virus-free plant could be reduced the injury by continuous cropping of sweet potato, and increased farm income.

show abstract

“…In the USA this increase was due to the use of infected propagating material and increasing population of its vector (Ling et al 2010). The spread of SPLCV can be very rapid in response to increasing whitefly population.…”

Section: Sweetpotato Leaf Curl Virus (Splcv) Diseasementioning

confidence: 99%

“…There are several major viral diseases in sweetpotato but only a few have been studied and identified (Kokkinos & Clark 2006;Salazar et al 2001). At least twenty two viruses are known to be pathogens of sweetpotato of which more than ten types are recognized to cause damage to the sweetpotato industry worldwide (Ling et al 2010;Wang et al 2010). The economic losses due to these virus diseases are significant.…”

Section: Major Virus Diseases In Sweetpotatomentioning

confidence: 99%

Studies on propagation materials and growing conditions for sweetpotato [Ipomoea Batatas (L.) Lam] production

Atu¹

View full text Add to dashboard Cite

A thesis submitted for the degree of Master of Philosophy atThe University of Queensland in 2013 School of Agriculture and Food Sciences i ABSTRACTSweetpotato propagation is cultivated through use of sprout (slip) or vine cutting. Production of sprout is increased by best selection of storage root sizes to optimize growth and yield.Cultivars of different storage root sizes produced variable numbers of sprouts, varying in length and thickness and to explore this four storage root sizes in an open field bed were trialed. Beauregard and Northern Star storage roots selected from the large, medium, smallmedium and small storage root category sown in bed and sprouts at three length classes were first measured 47 days after sowing. The next three harvests were measured at 21 days interval while the fifth harvest was at 44 days after the fourth, calculated from the Growing Degree Days (GDD) units. Beauregard produced significantly higher number of sprout at >20 cm but fewer > 35 cm length than Northern Star. The sprout length 20 -35 cm class increased for both varieties after Harvest 1 but Beauregard tended to increase less for this class than Northern Star with progressive harvests. In the fifth harvest 20 -35 cm length class for both varieties had reduced although Northern Star produced more for this class than Beauregard. A significantly higher number of sprouts were produced by large root but not significantly different from the medium root. Sprout categories for < 20 and 20 -35 cm were greater for large and medium roots than smaller roots. The thickness of sprout progressively decreased in numbers as storage roots size decreased. Sprouts longer than 20 cm are considered best propagation material for farmers and to achieve this within the best possible short period is an advantage to farmers.The experiment study on seven sweetpotato varieties for pathogen tested (PT) and nonpathogen tested (NPT) was investigated at 60 days after planting (DAP), 120 DAP and 220 DAP for yield differences. There was no significant difference (P < 0.05) for all varieties for early root growth at 60 (DAP). No significant difference was observed for PT and Non-PT for the marketable yield but a significant increase in non-marketable yield at 120 DAP and 220 DAP for PT and non-PT was presumably due to virus infection.The number of marketable storage root production declined as the crop grew older but the opposite trend occurred for the non-marketable yield which increased three fold in the final harvest compared to the previous harvest. Northern Star produced the highest number and weight of marketable and non-marketable roots compared to the other six varieties.ii LD02 and Beauregard were the second best varieties in terms of marketable roots while L49, Vekeoli and Lola Tonga had the least potential. Northern Star followed by Beauregard and LD02 proved their supremacy by their ability to partition dry matter to bulk storage root.Beauregard was the only variety observed with SPFMV infection in the foliage.High soil temperatures affected the...

show abstract

Field evaluation of yield effects on the U.S.A. heirloom sweetpotato cultivars infected by Sweet potato leaf curl virus

Cited by 45 publications

References 48 publications

Elimination and detection of viruses in meristem-derived plantlets of sweetpotato as a low-cost option toward commercialization

Elimination and detection of viruses in meristem-derived plantlets of sweetpotato as a low-cost option toward commercialization

Effect of Virus-free Plant and Subsoiling Reversion Soil for Reduction of Injury by Continuous Cropping of Sweet Potato

Studies on propagation materials and growing conditions for sweetpotato [Ipomoea Batatas (L.) Lam] production

Contact Info

Product

Resources

About