Advances in rice genetics - download pdf or read online

By D S Brar; B Hardy

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Vijayakumar, Directorate of Rice Research, Hyderabad 500 030, India. 18 Advances in rice genetics Genetic analysis of temperature-sensitive genic male sterility in rice A. E. Naina Mohammed, R. M. Vijayakumar Crosses were made between two TGMS lines, ID24 × SM5 and IC10 × JPs4. The F1s had completely normal pollen and spikelet fertility under high temperature (35 °C day/26 °C night). The F2s showed a 9 fertile:7 sterile ratio, indicating that the character is governed by two separate genes. Pollen sterility in the F2 ranged from completely sterile to 27% sterility, indicating the effect of modifier genes under high-temperature regimes (during April 1998 at Tiruchirapalli, India).

Genetics of thermosensitive genic male sterility in rice. Euphytica 88:1-7. Li Rongbai, Pandey MP. 1998. Genetics of the thermosensitive genic male sterility trait in rice. Int. Rice Res. Notes 23(2):9-10. Li Rongbai, Pandey MP. 1999. ). J. Genet. Breed. 53:11-17. Maruyama K, Araki H, Kato H. 1991. Thermosensitive genic male sterility induced by irradiation. In: Rice genetics II. Manila (Philippines): International Rice Research Institute. p 227235. Pandey MP, Li Rongbai, Singh JP, Mani SC, Singh H, Singh S.

25 dS m–1 during the 1998 wet season. Sodicity tolerance was scored for phenotypic acceptability (PACP) immediately after sowing, that is, at germination (3–5 d after emergence), seedling, tillering, flowering, and harvest (maturity), using a 0–9 scale, with 9 being the most susceptible reaction in terms of poor germination, seedling vigor, tillering, flowering, and maturity (spikelet fertility) and 1 indicating that plants are sodic-tolerant. 25 dS m–1. Pollen fertility was tested by staining the pollen in 1% potassium iodide (IKI) from five random spikelets of individual plants.

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