2508   h, t, ag, Xa 2509   oli, l - 2, t v , ag ( wf ) 2591   Xa - 2, h, ag 2592   u, h, t, nd, ag 2593   u, auv, ag Chromosome 11 LA 0291   hl, a ( ms - 2 ) 0729   neg, a 0730   a, pro 0761   a, hl, j 0803   hl, a, pro ( ms - 2 ) 0881   neg, hl, a 0925   j, hl, a, f 1102   a, hl, tab 1113   j, hl, a, f ( ms - 31 ) 1488   neg, ini 1786   j, f, a ( bi, c ) 2352   j, f ( p, c ) 2364   j, a, f ( y, wt, c, l, u ) 2489   neg ne - 2 , a Chromosome 12 LA 1111   fd, alb 1171   yg - 2 aud , fd 1177   alb, mua II .   Linkage Screening Testers (16) As explained previously (TGC 22:24), we have endeavored to synthesize a set of linkage testers, each of which has two pairs of strategically situated markers on two different chromosomes .   They are intended primarily for screening new, unmapped markers .   The next group of chromosomal markers should be used for subsequent testing to delimit loci more accurately .   Whereas six of these stocks should pretty well cover the tomato genome, we list below the entire series of the current available testers because alternative stocks differ in their usefulness, depending upon the phenotype of the new mutant to be located . Numbers of the respective chromosomes are indicated in parentheses .   The mutant scf is bracketed in stocks in which it was inadvertently lost in the course of segregation and selection . LA 0780 yv, c (6) ; h, ag (10) 0781 ful, e (4) ; neg, a (11) 0784 ful, e (4) ; hl, a (11) 0982 clau, e (4) ; hl, a (11) 0983 l, dl (8) ; ah, marm (9) 1164 var, not (7) ; ah, marm (9) 1166 clau, su 3 (4) ; icn, ag (10) 1182 sy, sf (3) ; alb, mua (12)