Tertiäre Trisomie Für Chromosom 3<sup>5</sup>Bei<i>Pisum Sativum</i>

Müller, D.J.

doi:10.1080/00087114.1975.10796602

Cited by 6 publications

(2 citation statements)

References 5 publications

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“…Although weak in growth, these T/T plants were self-fertile, and served as an important source of N/T plants in crosses with N/N plants. The homozygote inferiority exhibited in the present T/T plants was in accordance with earlier reports on grass pea (Talukdar 2011a) and pea (Müller 1975), but it contradicted the origin of vigorous translocation homozygote in different other crops (Gale and Rees 1971;Sjödin 1971;Palmer and Heer 1984).…”

Section: Discussionsupporting

confidence: 81%

“…It can be used as an excellent cytogenetic tool along with other different stocks, developed in this crop for gene mapping and linkage group analysis (Talukdar 2008b(Talukdar , 2009a(Talukdar ,b,c, 2012a(Talukdar , 2012c, and also to reveal antioxidant defense response at aneuploid levels (Talukdar 2011c). Occurrence of trisomics in the progeny of translocation heterozygote was also reported in different legume crops (Sutton 1939;Pellew 1940;Müller 1975;Mercykutty and Kumar 1985).…”

Section: Discussionmentioning

confidence: 97%

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Cytogenetics of a reciprocal translocation integrating distichous pedicel and tendril-less leaf mutations inLathyrus sativusL.

Talukdar

2013

Caryologia

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Grass pea (Lathyrus sativus L.) is a crop with 2n = 2x = 14 chromosomes. Two variants were isolated from 250 Gy gamma ray treated M 2 progenies of variety BioL-203: (i) two pedicels per peduncle (distichous pedicel); and (ii) complete absence of tendril in leaf (tendril-less). Occurrence of quadrivalents at meiosis I and partial pollen sterility (48.50%) indicated that the plants were heterozygous for a reciprocal translocation (RT), and were tentatively designated as RT-7. It transmitted at an average of 44% in the progeny, and along with normal fertile plants (N/N), produced trisomic plants (5.76%) with association of five chromosomes in selfed and intercrossed progenies. Test of independence of this newly found translocation was performed by analyzing the pattern of chromosomal ring formation at meiosis I in the F 1 progeny of crosses between RT-7 and six previously detected RT lines. Presence of a ring of six chromosomes in F 1 plants indicates that the two translocations have one chromosome in common in crosses between RT-7 and RT-2, RT-3, RT-5 and RT-6, but possessed two different chromosomes in RT-7 Â RT-1 and in RT-7 Â RT-4. The two mutant traits assorted independently in F 2 and back cross progenies of N/N plants. However, a strong deviation of segregation of four phenotypes derived from N/N Â RT-7 from normal F 2 and back cross ratios revealed tight linkages among translocation breakpoint, distichous pedicel and tendril-less leaf. The results suggested that the two mutations, distichous pedicel and tendril-less leaf, which assorted independently in N/N plants, were integrated on a single chromosome by a reciprocal translocation in RT-7 line.

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Section: Discussionsupporting

confidence: 81%