Diploid meadow fescue

Pastures in Indian Himalayas are based largely on annual and perennial temperate species that are rich in biodiversity but have less productivity. The main temperate grass and legume species prevalent are perennial ryegrass, tall fescue, festulolium hybrid, red and white clovers. Fescue grass consists of two agriculturally important forage crops, hexaploid tall fescue and diploid meadow fescue. Ryegrass contains two widely cultivated temperate species, Italian or annual ryegrass and perennial ryegrass. Both species are naturally diploid and are closely related to fescues.

10p nguaconbaynhay5 11-05-2020 6 0   Download

This study was carried out under greenhouse conditions in 1994-1995. The influence of phosphate treatments (0, 1, 2,3 and 4g P2O5/pot) on meiotic chromosome pairing and the number of arms bound at the first metaphase (MI) in plants of diploid Senu variety of meaddow fescue (Festuca pratensis Huds.) and its advanced generation (C6) autotetraploid (Tetra Senu) were studied.

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AI segregations were often balanced in eutetraploids but the frequency of balanced groups was found to be lower than that of the diploids. The difference between diploid and eutetraploid in terms of the frequencies of balanced cells and the frequency of cells with laggards at AI was found to be significant.

9p aquaman27 15-01-2019 18 1   Download