247 SOMATIC HYBRIDIZATION BETWEEN SOLANUM OCHRANTHUM AND LYCOPERSICON ESCULENTUM
نویسندگان
چکیده
منابع مشابه
Chromosome number variation in somatic hybrids between transgenic tomato (Lycopersicon esculentum) and Solanum lycopersicoides.
Leaf mesophyll protoplasts of Lycopersicon esculentum were fused with suspension-culture-derived protoplasts of Solanum lycopersicoides by a PEG treatment. Both species have the same chromosome number (2n = 2x = 24). The hybrid calli were selected using the full selection method - kanamycin resistance and culture conditions critical for L. esculentum protoplast divisions. The genomic in situ hy...
متن کاملSexual hybridization of Lycopersicon esculentum and Solanum rickii by means of a sesquidiploid bridging hybrid.
A sesquidiploid hybrid having two genomes of Lycopersicon esculentum and one of Solanum lycopersicoides served as a pistillate bridging parent in crosses with Solanum rickii to produce L. esculentum x S. rickii hybrid progeny. Of the four progeny obtained, one (GH2754) was diploid and three were aneuploid with extra S. lycopersicoides chromosomes. The hybrids had morphological features of both ...
متن کاملMeiosis in sesquidiploid hybrids of Lycopersicon esculentum and Solanum lycopersicoides.
We have synthesized diploid hybrids between Lycopersicon esculentum and Solanum lycopersicoides and have converted them to allotetraploids. Two sesquidiploids, having two complements of the former parent and one of the latter, have been obtained by backcrossing the former parent with the alloploid. In meiosis of the sesquidiploid the L. esculentum chromosomes exhibit strong preferential pairing...
متن کاملPreferential Chromosome Pairing in Allotetraploid Lycopersicon Esculentum-solanum Lycopersicoides.
large and diverse body of data argues that chromosomes are longitudinally A differentiated in such a way that corresponding segments located in different chromosomes are able to recognize and synapse with each other with a high degree of precision at meiotic prophase; this property is termed “homology.” Although regions exhibiting homology may not be coiitinuous throughout the length of a chrom...
متن کاملGenetics of hybrid incompatibility between Lycopersicon esculentum and L. hirsutum.
We examined the genetics of hybrid incompatibility between two closely related diploid hermaphroditic plant species. Using a set of near-isogenic lines (NILs) representing 85% of the genome of the wild species Lycopersicon hirsutum (Solanum habrochaites) in the genetic background of the cultivated tomato L. esculentum (S. lycopersicum), we found that hybrid pollen and seed infertility are each ...
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ژورنال
عنوان ژورنال: HortScience
سال: 1994
ISSN: 0018-5345,2327-9834
DOI: 10.21273/hortsci.29.5.465a