Info

JAjt

■dA)t

dl)t

k=0 (l + r),+i+<:

dAJt

d,;

dAjt

dA),

which, noting the relation cov(A,B) = E{A*B} - E{/i}*E{B}, and E{A*B\ cov(A,B) + E{A)*E{B), can be expanded to dm

dWi+s+k

dAit 'dll

JJi dl it

9 The increment is -= —-- =-—--where AA = A, - An.

dA AA AA

10 For simplicity, the impact of A on AW is modeled as a continuous process. However, in reality, given that only a relatively small fraction of accessions will ever be used to develop new useful varieties, it is likely that the impact of accessions on A W is a process that makes infrequent but discrete jumps.

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