The Establishment of a Trisomic Series in a Two-Rowed Cultivated Variety of Barley

Seven Different Primary Trisomics In Grass Pea (Lathyrus sativus L.). II. Pattern of Transmission

“…This observation in the present material showed similarities with the higher transmission of the extra chromosome in the small seeded trisomics of tomato (Rick and Barton 1954), barley (Tsuchiya 1960), pearl millet (Singh et al 1984, Vari andBhowal 1986), rye (Kamanoi and Jenkins 1962) and sorghum (Liang 1979). Lower rate of germination as well as survivality and poor growth and vigour in trisomic plants may be ascribed to their origin from small seeds formed possibly from underdeveloped endosperm (Liang 1979).…”

Interchange Trisomics in a 6-rowed Barley

“…Thus the morphological characters enable the identification of different trisomics. Trisomic series for all the chromosomes in diploid 2-rowed wild and cultivated barley have been established and described by Tsuchiya (1960Tsuchiya ( , 1963Tsuchiya ( , 1967. He has classified the trisomics into seven independent types.…”

“…Leaf index was calculated by measuring the length and breadth of second leaf from the top. The trisomics were classified according to Tsuchiya (1960).…”

Cytogenetics of Ditelotetrasomic for Short Arm of Chromosome 3 of Barley (Hordeum vulgare L.).

“…However, the seed fertilities were very low, in most cases the selfed spikes were sterile, only at very favorable environments had some seeds set. Primary trisomic 3 (Pale) has poor seed fertility (Tsuchiya 1960), telotrisomic 3S has fairly good seed fertility (Wang and Tsuchiya 1990) , ditelotetrasomic 3S showed very poor seed fertility which could result from the dosage effect .…”

“…Six types of ditelotetrasomics for the short arms of barley chromosomes (1S , 2S, 3S, 5S, 6S, and 7S) have now been studied in detail (Tsuchiya 1967, 1969, Fedak and Helgason 1970, Wang and Tsuchiya 1989, Tsuchiya and Wang 1991 . In general, most dietlotetrasomics and their progenies were quite stable.…”