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A previous experiment using 'Fletcher' luffa gourd showed no improvement in seed germination after pre-treating the seeds with growth regulators such as gibberellic acid-3 and ethephon (17). Based on the tests conducted, acetone is not recommended as a seed treatment for improvement of seed germination in luffa gourd. The remaining treatments could be used to pregerminate seeds so as to remove seeds that were slow germinators or nongerminators. Pregermination would also be useful to establish a crop in the field with one plant per hill, and with all plants at the same stage of growth. Literature Cited 1. Darby, R.J. and P.J. Salter. 1976. A technique for osmotically pretreating and germinating quantities of small seed. Ann. Appl. Biol. 83:313-315. 2. Davis, J.M. 1997. Commercial luffa sponge gourd production. N.C. State Univ. Agr. Ext. Hort. Info. Lflt. No. 120. North Carolina Agricultural Extension Service, Raleigh, 3 pp. 3. Ellis, R.H. and E.H. Roberts. 1985. Handbook of seed technology for genebanks Volume II. Compendium of specific germination information and test recommendations, pp. 317-321. 4. Fieldhouse, D.J. and M. Sasser. 1975. Stimulation of pepper seed germination by sodium hypochlorite treatment. HortScience 10:622. 5. Hegarty, J.W. 1979. Factors influencing the emergence of calabrese and carrot seedlings in the field. J. Hortic. Sci. 54:194-20. 6. Huyskens, S., S. Mendlinger, A. Benzioni, and M. Ventura. 1993. Optimization of agrotechniques in the cultivation of Luffa acutangula. J. Hort. Sci. 68: 989-994. 7. Joy, C. 1987. Selected European markets for specialty and tropical fruit and vegetables. Tropical Development and Research Institute, London, Newsletter, No. G201, vi. 8. Khan, A.A., C.M. Karssen, E.F. Leve, and C.H. Roe. 1979. Preconditioning of seeds to improve performance. In: T.K. Scott (Ed.), Plant Regulation and World Agriculture. Plenum Press, New York, pp. 395-414. 9. Kotowski, F. 1962. Temperature relations to germination of vegetable seeds. Proc. Amer. Soc. Hort. Sci. 23:176-184. 10. Nelson, J.M. and G.C. Sharples. 1980. Effect of growth regulators on germination of cucumber and other cucurbit seeds at suboptimal temperatures. HortScience 26:253-254. 11. Okusanya, O.T. 1978. The effects of light and temperature on germination and growth of Luffa aegyptiaca. Physiol. Plant. 44:429-433. 12. Okusanya, O.T. 1983. Experimental studies on some observed variations in Luffa aegyptiaca. Can. J. Bot. 61:202-210. 13. Staub, J.E., T.C. Wehner, and G.E. Tolla. 1989. The effects of chemical seed treatments on horticultural characteristics in cucumber (Cucumis sativus L.). Scientia Hort. 38:1-10. 14. Thomas, T.H. 1981. Seed treatments and techniques to improve germination. Scientia Hortic. 32:47-59. 15. Thompson, P.A. 1974a. Characterization of the germination responses to temperature of vegetable seeds. I. Tomatoes. Scientia Hortic. 2:35-54. 16. Thompson, P.A. 1974b. Effects of fluctuating temperature on germination. J. Exp. Bot. 25:164- 175. 17. Wehner, T.C. and T. L. Ellington. 1997. Seed treatment effects on emergence of luffa sponge gourd. Cucurbit Genetics Cooperative Rpt. 20:63-64. 18. Yaklich, R.W. and M.D. Orzolek. 1977. Effect of polyethylene glycol-6000 on pepper seed. HortScience 12:263-264. Cucurbit Genetics Cooperative Report 24:107-109 (2001) 109
Gene List 2001 for Cucumber Jiahua Xie and Todd C. Wehner Department of Horticultural Science, North Carolina State University, Raleigh, NC 27695-7609 U.S.A. This is the latest version of the gene list for cucumber (Cucumis sativus L.). Complete lists and updates of genes for have been published previously (Pierce and Wehner, 1989; Robinson et al., 1976; Robinson et al., 1982; Wehner, 1993; Wehner and Staub, 1997). For the first time, this list includes genes that have been cloned from different plant tissues of cucumber. The genes on the 2001 list are of ten categories as follows: seedling markers, stem mutants, leaf mutants, flower mutants, fruit type mutants, fruit color mutants, resistance genes (mostly to diseases), protein (isozyme) variants, DNA (RFLPs and RAPDs) markers (Table 1), and cloned genes (Table 2). Revisions to the 1997 cucumber gene list include the addition of nine genes that have been reported during past 5 years, including: bi-2, mj, msm, Prsv-2, rc-2, wmv-2, wmv-3, wmv-4, and zym-Dina. Six genes for virus resistance (mwm, zym, Prsv-2, wmv-2, wmv-3, and wmv-4) come from one inbred TMG-1. Genes that have been published in previous lists but modified in this list are zymv (renamed zym, and then zym-TMG1 to distinguish it from zym-Dina). The gene mwm published in the literature may be the same as zym-TMG1. We also corrected the symbol for the flower mutant, male sterile-2 pollen sterile, ms-2 (PS) (Zhang et al., 1994), with the superscript in parentheses to indicate an indistinguishable allele. Isozyme variant nomenclature for this gene list follows the form according to Staub et al. (Staub et al., 1985), such that loci coding for enzymes (e.g. glutamine dehydrogenase, G2DH) are designated as abbreviations, where the first letter is capitalized (e.g. G2dh). If an enzyme system is conditioned by multiple loci, then those are designated by hyphenated numbers, which are numbered from most cathodal to most anodal and enclosed in parentheses. The most common allele of any particular isozyme is designated 100, and all other alleles for that enzyme are assigned a value based on their mobility relative to that allele. For example, an allele at locus 1 of FDP (fructose diphosphatase) which has a mobility 4 mm less that of the most common allele would be assigned the designation Fdp(1)-96. RFLP marker loci were identified as a result of digestion of cucumber DNA with DraI, EcoRI, EcoRV, or HindIII (Kennard et al., 1994). Partialgenomic libraries were constructed using either PstIdigested DNA from the cultivar Sable and from EcoRV-digested DNA from the inbred WI 2757. Derived clones were hybridized to genomic DNA and banding patterns were described for mapped and unlinked loci (CsC482/H3, CsP314/E1, and CsP344/E1, CsC477/H3, CsP300/E1). Clones are designated herein as CsC = cDNA, CsP = PstI-genomic, and CsE = EcoRI-genomic. Lowercase a or b represent two independently-segregating loci detected with one probe. Lower-case s denotes the slowest fragment digested out of the vector. Restriction enzymes designated as DI, DraI; EI, EcoRI; E5, EcoRV; and H3, HindIII. Thus, a probe identified as CsC336b/E5 is derived from a cDNA library (from 'Sable') which was restricted using the enzyme EcoRV to produce a clone designated as 336 which displayed two independently segregating loci one of which is b. Clones are available in limited supply from Jack E. Staub. RAPD marker loci were identified using primer sequences from Operon Technologies (OP; Alameda, California, U.S.A.) and the University of British Columbia (Vancouver, BC, Canada). Loci are identified by sequence origin (OP or BC), primer group letter (e.g., A), primer group array number (1- 20), and locus (a, b, c, etc.) (Kennard et al., 1994). Information regarding unlinked loci can be obtained from Jack E. Staub. Because of their abundance, common source (two mapping populations), and the accessibility of published information on their development (Kennard et al., 1994) DNA marker loci are not included in Table 1, but are listed below. Cucurbit Genetics Cooperative Report 24:110-136 (2001) 110
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Cucurbit Genetics Cooperative Coope
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The Cucurbit Genetics Cooperative (
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this would be a welcome benefit to
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Georgia, Statesboro, GA, “Evaluat
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http://www.ashs.org/ashspress/ wate
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Cucurbit Genetics Cooperative Finan
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Table 1. The composition of culture
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Prezygotic barriers have previously
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Cucumber Inbred Line USDA 6632E Jac
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Multiple Shoot Induction from the S
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Table 3. Effects of combinations of
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concentration of NAA (0.1 mg/l) wit
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eplicate. Shoot differentiation and
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Table 2. Shoot induction efficiency
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Figure 1. The viability of Cucumis
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Gynogenesis in a Dihaploid Line of
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Resistant Blister Reaction to Powde
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Table 1. Analysis of variance for p
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Fusarium Wilt Resistance in Eight I
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aised PM seedlings and plants, alth
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Table 1. F2 single factor segregati
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of the loci (e.g., M7675, U13831, A
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Table 1. Percentage of RAPD band pr
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Inodorus Primer Casaba Honeydew Cha
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Frequency of RAPD Polymorphisms in
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BC551 76.6 92.9 38.5 20.5 38.9 42.2
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Powdery Mildew: An Emerging Disease
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Table 1 (continued).z Cultivar Coun
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Disease Severeity Rating Figure 1.
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In the present study C. lanatus ent
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Lakes, NJ) was a 0.5 cc (50 unit) s
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Characterization of a New Male Ster
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Table 1. Progeny test of male steri
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Progeny Diploid Year Season generat
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Page 73 and 74: Stars-N-Stripes 26.3 12.0 35 8.5 5.
Page 75 and 76: 11. Mozumder, B.K.G, N.E. Caroselli
Page 77 and 78: Table 1. Vine length of watermelon
Page 79 and 80: Survey of Watermelon Trialing Metho
Page 81 and 82: assigned to adjacent plots (Table 2
Page 83 and 84: Variation among tropical pumpkin cu
Page 85 and 86: Table 1. Aggressiveness of powdery
Page 87 and 88: A large variability of aggressivene
Page 89 and 90: Table 1: Observed reaction of melon
Page 91 and 92: Same Gene for Bush Growth Habit in
Page 93 and 94: Relationship between Fruit Shape an
Page 95 and 96: Table 3. Seed yield per fruit and s
Page 97 and 98: The four cultivar-groups differed m
Page 99 and 100: Lee et al. (17) developed a RAPD ma
Page 101 and 102: 19. Lelley, T and S. Henglmüller,
Page 103 and 104: Those primers that had strong bands
Page 105 and 106: Genetic Variability in Pumpkin (Cuc
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Page 115 and 116: Table 1. Components used for cultur
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Page 119: the preceding one or two days (depe
Page 123 and 124: Ar - Anthracnose resistance. One of
Page 125 and 126: de I determinate habit. Short vine
Page 127 and 128: gi - ginkgo. Leaves reduced and dis
Page 129 and 130: Mdh-4 Mdh- 3 Malate dehydrogenase-4
Page 131 and 132: h from 'Gy 2 cp cp', 'Spartan Salad
Page 133 and 134: wf - White flesh. Intense white fle
Page 135 and 136: M16056 Cotyledon cDNA Encoding ribu
Page 137 and 138: (for CsPK2.2) AB001590 Hypocotyl RN
Page 139 and 140: Caruth, T. F. 1975. A genetic study
Page 141 and 142: John, C. A. and J. D. Wilson. 1952.
Page 143 and 144: Ohkawa, J., A. Shinmyo, M. Kanchana
Page 145 and 146: Shimizu, S., K. Kanazawa, and A. Ka
Page 147 and 148: Youngner, V. B. 1952. A study of th
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Page 151 and 152: Denlinger, Phil Mt. Olive Pickle Co
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Page 155 and 156: germplasm evaluation and conservati
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Page 159 and 160: Alabama Fenny Dane Arkansas Ted Mor
Page 161 and 162: Covenant and By-Laws of the Cucurbi
Page 163: ARTICLE IX. General Prohibitions No
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