Complete volume with articles 1 to 32 - Cucurbit Breeding - North ...
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Table 1. Chi-square values and probabilities associated <strong>with</strong> segregations of F2 and backcross<br />
populations used <strong>to</strong> test a single recessive gene model for the inheritance of the precocious yellow<br />
trait in C. moschata.<br />
Observed<br />
Cross<br />
Plant part 1<br />
Col Golden x Fruits/ovaries<br />
Waltham - A at anthesis<br />
Col Golden x Fruits/ovaries<br />
Waltham – B at anthesis<br />
Col Golden x Fruits/ovaries<br />
Waltham – C at anthesis<br />
Col Golden x Fruits/ovaries<br />
Waltham – D at anthesis<br />
Col Golden x Fruits/ovaries<br />
Waltham - E at anthesis<br />
Pooled Fruits/ovaries<br />
at anthesis<br />
Green<br />
segregation 2<br />
Yellow/<br />
Bicolor<br />
Wisconsin<br />
Model tested<br />
χ2 value<br />
Probability<br />
17 6 3:1 0.014 0.901<br />
21 2 3:1 3.261 0.071<br />
14 6 3:1 0.267 0.606<br />
12 8 3:1 2.400 0.121<br />
21 3 3:1 2.000 0.157<br />
85 25 3:1 0.303 0.582<br />
Puer<strong>to</strong> Rico<br />
Col Gold x Plant at 8 39 11 3:1 0.240 0.624<br />
Col 5 (F2) weeks<br />
Plant at 16<br />
weeks<br />
33 17 3:1 2.160 0.142<br />
Fruits at 20<br />
weeks<br />
27 13 3:1 1.200 0.273<br />
(Col Gold x Plant at 8 28 22 1:1 0.720 0.396<br />
Col 5) x Gold<br />
(BC)<br />
weeks<br />
Plant at 16<br />
weeks<br />
25 25 1:1 0.000 1.000<br />
Fruits at 20<br />
weeks<br />
18 16 1:1 0.118 0.7<strong>32</strong><br />
(Col Gold x Plant at 8 50 0 All green --- ---<br />
Col 5) x Col 5<br />
(BC)<br />
weeks<br />
Plant at 16<br />
weeks<br />
50 0 All green --- ---<br />
Fruits at 20<br />
weeks<br />
49 1 All green --- ---<br />
Col Gold x Plant at 16 75 25 3:1 0.000 1.000<br />
Soler (F2) weeks<br />
1<br />
Eight and 16 week old plants were classified as “yellow/bicolor” if yellow sec<strong>to</strong>rs<br />
appeared on all or some of the following plant parts: immature ovaries, leaves, stems,<br />
peduncles and/or staminate flowers. Plants <strong>with</strong> yellow sec<strong>to</strong>rs on vegetative parts always<br />
had yellow (or bicolor) ovaries.<br />
2<br />
Not all plants set fruit in the populations tested in Puer<strong>to</strong> Rico.<br />
82 <strong>Cucurbit</strong> Genetics Cooperative Report 28-29: 79-83 (2005-2006)
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