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A gene for tolerance to herbicide was assigned to chromosome 1 using a
Texas marker stock having the morphological markers L 1 L , lp1 and Lcx.
This dominant marker was independent of the leaf shape marker on the
short arm and 33.5 ± 9.2 cM from cotyledonary marker Lp 1 that is on the
long arm. The lc x for white lint was associated with Lp1 of the tolerant
parent such that lc x lcx was common to plants unharmed by herbicide. The
Lc x for brown lint was independent of dominant leaf shape, but circa 30 ±
10 cM from the gene for tolerance. The undisturbed Lp 1 - L1 L segregation
for normal chromosome 1 reported in Endrizzi and Stein (1975) became a
disturbed one in the present study. This disturbance could be attributed to
foreign DNA. Since Lc x has not been assigned in a formal manner to
chromosome 1 and the three other brown linked markers have been placed
on separate chromosomes, the Lc 4 is deduced for presence on chromosome |
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©National Cotton Council, Memphis TN |
Document last modified XXXXXX, XXX XX 2001
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