Registration of N96076L Peanut Germplasm Line

Isleib, T. G.; Rice, P.; Mozingo, R. W.; Copeland, S. C.; Graeber, J.B.; Shew, B. B.; Smith, Damon L.; Melouk, H. A.; Stalker, H. T.

doi:10.2135/cropsci2005.12.0479

Cited by 23 publications

(24 citation statements)

References 13 publications

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“…These segregating plants were cloned before harvest and will be used as a source of partial resistance. Leaf spots partial resistant germplasm lines were developed (Stalker et al 2002, Isleib et al 2006) based on the interspecific population A. hypogaea x A. cardenasii (Stalker et al 1979). The germplasm line N96076L was used in the breeding of the partial resistant cultivar Bailey (Isleib et al 2011), which requires a reducedcost fungicide program (Holbrook et al 2014).…”

Section: Resultsmentioning

confidence: 99%

Yield, market quality, and leaf spots partial resistance of interspecific peanut progenies

Suassuna

Moretzsohn

et al. 2015

Crop Breed. Appl. Biotechnol.

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Section: Resultsmentioning

confidence: 99%

Yield, market quality, and leaf spots partial resistance of interspecific peanut progenies

Suassuna

Moretzsohn

et al. 2015

Crop Breed. Appl. Biotechnol.

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“…The germplasm line N96076L has been released as a source of multiple disease resistance, including resistance to Sclerotinia blight (Isleib et al, 2006). However, N96076L is highly susceptible to CBR and does not have yield and quality comparable to commercial cultivars.…”

Section: Discussionmentioning

confidence: 99%

“…Several lines derived from interspecific hybridization have been released as disease-, nematode-and insect-resistant germplasm (Stalker and Beute, 1993;Stalker et al, 2002a, b;Stalker and Lynch, 2002. ) including one resistant to Sclerotinia blight (Isleib et al, 2006).…”

Section: Methodsmentioning

confidence: 99%

Screening of Virginia-Type Peanut Breeding Lines for Resistance to Cylindrocladium Black Rot and Sclerotinia Blight in the Greenhouse

Hollowell¹,

Isleib²,

Tallury³

et al. 2008

Peanut Science

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Cylindrocladium black rot (CBR) caused by Cylindrocladium parasiticum and Sclerotinia blight caused by Sclerotinia minor are two economically important diseases of peanut (Arachis hypogaea) in the Virginia-Carolina production area. Developing cultivars with resistance to both diseases requires screening of new peanut breeding lines for resistance. Because field evaluations of resistance to these diseases often fail to produce usable results, greenhouse protocols were used to screen breeding lines and cultivars for resistance. For CBR, two seeds of a genotype were planted in a ''cone-tainer'' filled with a planting medium artificially infested with 25 microsclerotia of C. parasiticum per g of medium. After approximately 8 wk, the roots were washed and rated for degree of decay on a 0-5 proportional scale (0 5 no decay to 5 5 completely decayed). For Sclerotinia blight, plants were inoculated at 6 wk after planting by pushing a plug of potato dextrose agar (PDA) colonized by S. minor and protected from desiccation in a BEEM embedding capsule onto a freshly cut petiole on the main stem of the plant. Inoculated plants were placed in a mist chamber to maintain the high humidity necessary for infection. Lesion lengths were measured 4, 5, 6, and 7 days after inoculation, and areas under the disease progress curves (AUDPC) were calculated. All tests were conducted as incomplete block designs with six replications for CBR tests and four replications for Sclerotinia blight tests. Adjusted entry means were computed from each year's tests and used in summary analyses. Of the 125 breeding lines and checks tested at least once from 2003 through 2006, 51 were tested in at least two years, 34 in at least three years, and 15 lines were tested in all four years. Of the 15 lines tested in all four years, registered germplasm line N96076L had the lowest AUDPC for Sclerotinia blight (58 mm days), but had the greatest CBR root decay score (4.1 decay rating units). Several closely related breeding lines descended from a cross of N96076L and NC 12C were not significantly different from the most resistant line for either disease with scores ranging from 2.2-3.0 decay rating units for CBR and 63-99 mm days for Sclerotinia blight. Correlations of multiple-year greenhouse assay means with field disease incidence means were 0.83 for CBR and 0.35 for Sclerotinia blight. The greenhouse assay for CBR was a reasonably good predictor of field performance, but the assay for Sclerotinia blight was less reliable as a predictor.

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“…: VA-C 92R (Mozingo et al, 1994), VA 98R (Mozingo et al, 2000), and Wilson (Mozingo et al, 2004). Four disease-resistant checks were included: the TSW-field-resistant runner-type cultivar Georgia Green, leaf spot-resistant germplasm line GP-NC 343 (Campbell et al, 1971), multiply disease-resistant germplasm line N960976L (Isleib et al, 2006c) and TSW-field-resistant hirsuta-type (A. hypogaea subsp. hypogaea var.…”

Section: Methodsmentioning

confidence: 99%

Stability Analysis of Incidence of Tomato Spotted Wilt in Virginia-Type Peanut Cultivars and Breeding Lines

et al. 2013

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Tomato spotted wilt (TSW) caused by Tomato spotted wilt tospovirus (TSWV) has become a serious constraint to peanut (Arachis hypogaea L.) production in the Virginia-Carolina production area. Regression stability analysis was applied to TSW incidence data collected in 64 trials conducted over 17 years to determine if an array of 31 virginia-type cultivars and breeding lines exhibited variation in their reactions to increasing levels of general TSW intensity compared with the standard field-resistant cultivar Georgia Green and hirsuta-type line PI 576636. Eight cultivars (NC 7, NC 9, NC 10C, NC-V 11, NC 12C, Perry, Phillips, and Brantley) had mean effects greater than zero (P,0.01) while Bailey, four Bailey siblings, and N96076L, Bailey's resistant parent, all had mean effects less than zero (P,0.01). The deviations of the slope of regression on environmental index (b k ) for four of the eight susceptible cultivars were greater than zero, indicating greater than average reaction to increased levels of TSW. The b k for Bailey indicated that its response to increasing levels of TSW was flat. PI 576636 was confirmed as a highly field-resistant line. The slopes of Georgia Green, the standard TSWV-resistant runner-type cultivar, the Bailey siblings and N96076L did not differ from the average of all lines. The correlation between mean effect and b k was r 5 0.693, indicating that approximately half the variation in b k could be explained by mean effects. However, the regression analysis provided information useful in describing the TSW reactions of the lines and cultivars.

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Registration of N96076L Peanut Germplasm Line

Cited by 23 publications

References 13 publications

Yield, market quality, and leaf spots partial resistance of interspecific peanut progenies

Yield, market quality, and leaf spots partial resistance of interspecific peanut progenies

Screening of Virginia-Type Peanut Breeding Lines for Resistance to Cylindrocladium Black Rot and Sclerotinia Blight in the Greenhouse

Stability Analysis of Incidence of Tomato Spotted Wilt in Virginia-Type Peanut Cultivars and Breeding Lines

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