Citrullus lanatus (Thunb.) Matsum. & Nakai - Cucurbit Breeding ...

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Table 3. Variance and heritability estimates for the four watermelon families screened for resistance to gummy stem blight in greenhouse and field tests in North Carolina (2002-2003) z . Pedigree σ 2 (P) y σ 2 (E) x σ 2 (G) w σ 2 (A) v H 2 B u h 2 n t Field test PI 189225 × 'NH Midget' 3.37 0.83 2.55 -0.79 0.76 -- s PI 482283 × 'NH Midget' 4.22 0.82 3.40 0.39 0.81 0.09 PI 482283 × 'Calhoun Gray' 5.52 4.37 1.15 0.82 0.21 0.15 PI 526233 × 'Allsweet' 2.12 0.17 1.95 4.09 0.92 1.93 Mean 3.81 1.55 2.26 1.32 0.68 0.54 Greenhouse test PI 189225 × 'NH Midget' 4.20 1.01 3.19 4.07 0.76 0.97 PI 482283 × 'NH Midget' 4.28 1.74 2.54 4.87 0.59 1.14 PI 482283 × 'Calhoun Gray' 4.09 0.73 3.36 5.25 0.82 1.28 PI 526233 × 'Allsweet' 3.16 0.85 2.31 3.60 0.73 1.14 Pooled Mean 3.93 1.08 2.85 4.45 0.73 1.13 PI 189225 × 'NH Midget' r 4.00 0.97 3.03 2.70 0.76 0.67 PI 482283 × 'NH Midget' q 4.31 1.58 2.72 3.36 0.63 0.78 PI 482283 × 'Calhoun Gray' p 5.58 3.47 2.11 5.25 0.38 0.94 PI 526233 × 'Allsweet' o 6.39 1.73 4.65 7.70 0.73 1.21 Mean 5.07 1.94 3.13 4.75 0.63 0.90 z Data are ratings from four families of resistant PI accessions by susceptible cultivars of Citrullus lanatus var. lanatus and citroides. Disease assessment scale adopted for evaluating watermelon for resistance to gummy stem blight: 0 = no disease; 1 = yellowing on leaves (suspect of disease only); 2 to 4 = symptoms 123
on leaves only; 5 = some leaves dead, no symptoms on stem,; 6 to 8 = symptoms on leaves and stems; 9 = plant dead y σ 2 (P) = phenotypic variance = ! 2 x σ 2 (E) = environmental variance = w σ 2 (G) = genetic variance = ! 2 ( ) F 2 ! 2 ( ) + ! 2 ( ) + 2 " ! 2 ( ) P a ( P) " ! 2 ( E) v σ 2 (A) = additive variance = 2 ! " 2 [ ( F ) 2 ] # " 2 u H 2 B = broad-sense heritability t h 2 n = narrow-sense heritability P b 4 [ F1 ] ( BC P ) + " 1 a 2 [ ( BC P ) 1 a ] s Negative estimate from a negative estimate of additive variance r F 2 Bartlett's χ 2 = 1.94; P-value = 0.16 q F 2 Bartlett's χ 2 = 0.01; P-value = 0.92 p F 2 Bartlett's χ 2 = 1.49; P-value = 0.22 o F 2 Bartlett's χ 2 = 2.95; P-value = 0.09 124
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Abstract GUSMINI, GABRIELE. Inherit
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Biography Gabriele Gusmini was born
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Currently, Gabriele is planning his
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Table of Contents LIST OF TABLES...
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Germplasm and Crosses..............
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GENERAL INTRODUCTION LIST OF TABLES
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GENERAL INTRODUCTION LIST OF FIGURE
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HERITABILITY AND GENETIC VARIANCE E
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Brief History of Watermelon Breedin
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absence of trichomes on the leaves
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The genetics of the flesh color in
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The primary nematode species attack
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1975), but no gene has been found f
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Henderson, W.R., G.H. Scott, and T.
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Shimotsuma, M. 1963. Cytogenetical
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Table 1. Watermelon cultivars with
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Figure 2. Cultivar Allsweet, releas
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Figure 4. Watermelon seeds size: 1
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Introduction The inheritance of rin
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stripes. In his study, Shimotsuma c
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Diamond'), GG mm = mottled dark gre
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Shimotsuma, M. 1963. Cytogenetical
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Figure 2. Cultivars Japan 6 and Chi
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Figure 4. Cultivars Crimson Sweet (
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Abstract The watermelon [Citrullus
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The rind (skin) colors and patterns
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two hybrids are the original canary
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Names and symbols for new genes pro
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Salmon Yellow and Red Flesh During
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During our experiments we did not f
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Poole, C.F. and P.C. Grimball. 1945
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Table 2. Single locus goodness-of-f
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Table 6. Continued. z Generation To
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Figure 1. Intermittent stripes in '
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Figure 3. Moons and stars induced o
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Figure 5. Examples of unexpected fl
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Abstract High yield is a major goal
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States appears to be narrow, with m
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y using only two replications from
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value=0.0001), indicating that cult
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Levi, A., C.E. Thomas, A.P. Keinath
Page 87 and 88: Table 1. Analysis of variance (degr
Page 89 and 90: Table 2. Continued. Yield z Fruit s
Page 91 and 92: Table 2. Continued. Yield z Fruit s
Page 93 and 94: w L/D = length/diameter ratio measu
Page 95 and 96: Abstract The cultivated watermelon
Page 97 and 98: dominance, and epistatic effects we
Page 99 and 100: thumped (Maynard, 2001). Weights we
Page 101 and 102: The giant-fruited parents had a lar
Page 103 and 104: Literature Cited Brar, J.S. and K.S
Page 105 and 106: Table 1. Phenotypic variances by ge
Page 107 and 108: Table 2. Variance and heritability
Page 109 and 110: t h 2 n = narrow-sense heritability
Page 111 and 112: Table 3. Continued. Effective Facto
Page 113 and 114: Figure 1. Each of the three cultiva
Page 115 and 116: CHAPTER FIVE HERITABILITY AND GENET
Page 117 and 118: fungus that is seed-borne (Lee et a
Page 119 and 120: the technique described herein. Pyc
Page 121 and 122: 9 = plant dead. Plants with a disea
Page 123 and 124: The possible gain from selection pe
Page 125 and 126: Based on our data, Norton may not h
Page 127 and 128: Gusmini, G., T.C. Wehner, and G.J.
Page 129 and 130: Sherbakoff, C.C. 1917. Some importa
Page 131 and 132: Table 1. Single locus goodness-of-f
Page 133 and 134: Table 1. Continued. z Generation To
Page 135 and 136: w Expected was the hypothesized seg
Page 137: on leaves only; 5 = some leaves dea
Page 141 and 142: z Data are ratings from four famili
Page 143 and 144: CHAPTER SIX PRELIMINARY STUDY OF MO
Page 145 and 146: fungus that is seed-borne (Lee et a
Page 147 and 148: approach was successful in assembli
Page 149 and 150: subculture on artificial medium bas
Page 151 and 152: We extracted DNA using an extractio
Page 153 and 154: products using the Genescan ® -500
Page 155 and 156: (DNA/Polysaccharides) and 260/280 (
Page 157 and 158: Future Research Based on our prelim
Page 159 and 160: Gusmini, G., T.L. Ellington, and T.
Page 161 and 162: Perin, C., L.S. Hagen, V. De Conto,
Page 163 and 164: Table 2. Analysis of variance for t
Page 165 and 166: 029 v 1 . 3 3 . . 3 4 3 3 . . . + B
Page 167 and 168: Table 3. Continued. 071 v 1 3 . 3 4
Page 169 and 170: Table 3. Continued. 113 2 4 5 5 4 3
Page 171 and 172: Table 3. Continued. 155 2 4 5 4 . 4
Page 177 and 178: Figure 1. Agarose gel electrophores
Page 179 and 180: 1 5 10 15 20 25 30 35 + + + + + + +
Page 181 and 182: The genetics of rind color (or patt
Page 183 and 184: were not successful, even though se
Page 185 and 186: Breeding Methods Traits of interest
Page 187 and 188: alternative to biotechnology and te
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The solution to these problems is n
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Cucurbit Gene List Committee. 1979.
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Henderson, W.R., G.H. Scott, and T.
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Matthews, P. (ed.). 1993. The guinn
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Provvidenti, R. 1991. Inheritance o
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Souza, F.F.d., M.A.d. Queiroz, and
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Wright, S. 1968. The genetics of qu
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