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GREEN SEED COAT COLOUR RETENTION IN LENTIL - University ...

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etween field and phytotron index scores as this was a trait that had large<br />

environmental effects. Another reason the phytotron does not predict the field<br />

index score well is the phytotron index score may be an estimate of the most<br />

desirable colour of each genotype’s seed coat. Where the field index scores<br />

included weathering which may have caused a colour change. The field index score<br />

could be affected by different retention rates for colour pigments that the phytotron<br />

is unable to replicate without some type of artificial weathering.<br />

Pytotron index score<br />

8<br />

7<br />

6<br />

5<br />

4<br />

3<br />

2<br />

1<br />

45<br />

y = 0.2166x + 2.5218<br />

R 2 = 0.0278<br />

0<br />

2 3 4 5 6 7 8 9 10<br />

Field index score<br />

Figure 4.2 Regression between the mean field index score of SPG, Sutherland, and<br />

Elrose during 2005 and 2006 and the phytotron index score for all RILs in the<br />

green seed coat colour differences study of lentil.

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