摘要
For the purpose of breeding new and fine varieties of turf bamboo, 5 turf bamboo species (Sasa pygmaea, Indocalamus decorus, I. latifolius, Shibataea chinensis, and S. fortune) were radiated through 137Cs γ-ray in tissue cultures at different radiation dose. It was shown that: 1) Four species of turf bamboo were sensitive to radiation, low dose radiation had no effect on bud germination, high dose radiation delayed bud germination; 2) Radiation at 5 and 10 Gy had not impact on shoot emergence, but radiation at 20 Gy made only S. pygmaea shoot emergence; 3) Radiation lethal dose of S. pygmaea in tissue culture ranged from 20 to 30 Gy, but less than 20 Gy for S. fortunei. The radiation lethal dose of bamboo rhizome of I. latifolius was 10 to 20 Gy, and over 20 Gy for I. decorus, I. latifolius and S. chinensis; 4) Golden yellow strips occurred in S. chinensis leave after radiation at 5 and 10 Gy. Therefore, it's possible to breed new fine ornamental bamboo varieties by radiation.
For the purpose of breeding new and fine varieties of turf bamboo, 5 turf bamboo species (Sasa pygmaea, Indocalamus decorus, I. latifolius, Shibataea chinensis, and S. fortune) were radiated through 137Cs γ-ray in tissue cultures at different radiation dose. It was shown that: 1) Four species of turf bamboo were sensitive to radiation, low dose radiation had no effect on bud germination, high dose radiation delayed bud germination; 2) Radiation at 5 and 10 Gy had not impact on shoot emergence, but radiation at 20 Gy made only S. pygmaea shoot emergence; 3) Radiation lethal dose of S. pygmaea in tissue culture ranged from 20 to 30 Gy, but less than 20 Gy for S. fortunei. The radiation lethal dose of bamboo rhizome of I. latifolius was 10 to 20 Gy, and over 20 Gy for I. decorus, I. latifolius and S. chinensis; 4) Golden yellow strips occurred in S. chinensis leave after radiation at 5 and 10 Gy. Therefore, it's possible to breed new fine ornamental bamboo varieties by radiation.
基金
Funded by National Public-benefit Research Institute Fund (CAFINT2008C12)
R & D Capacity Development Project of Zhejiang Science & Technology Department (2008E10G5390002)
