Official: Shenzhou VI not to carry plant seeds
By Wang Zhenghua (China Daily)
Updated: 2005-10-11 05:57
China will not carry any plant seeds aboard Shenzhou VI, its second manned
spacecraft, a senior official said yesterday. The announcement came after media
reports speculated that the spacecraft would carry seeds, animal semen or other
experimental items for space mutation breeding.
"Since Shenzhou V, which took the first Chinese astronaut Yang Liwei 14 times
around the earth for a 21-hour period in 2003, space experiments in China have
been focusing on human activities in outer space," Liu Luxiang, director of the
Centre for Space Breeding under the Beijing-based Chinese Academy of
Agricultural Sciences, told China Daily yesterday in a telephone interview.
The second manned space mission, expected to be launched this week, will
carry two astronauts into orbit for five days, during which their physical
reactions will be closely monitored.
"If it were an unmanned spaceship or recoverable satellite, we might have put
experimental things on it," said Liu, whose department selects seeds for outer
space experimentation and allocates them to breeding nurseries after they are
"An unmanned spaceship and a recoverable satellite could have a relatively
looser security demand and could expose seeds to more cosmic radiation to cause
a useful mutation," he said.
"But as a manned capsule, the Shenzhou VI has a different structure to block
radiation as much as possible, and strict measures are being taken to ensure its
Liu had obtained evidence from other sources but refused to identify them,
saying only: "China's style is to focus on one thing at a time."
He also denied that the absence of seeds is due to limited space on the
Since 1987, China has been keen on sending plant seeds about 200 to 400
kilometres above the earth to study genetic mutations and changes.
A variety of seeds, including corn, lotus and watermelon, have travelled in
space for up to two weeks in recoverable satellites or high-altitude balloons.
The high radiation in space-mutated, or genetically-modified, seeds' DNA, may
explain why peonies grown from "space seeds" are larger and more colourful than
normal. The mutations may also explain jumbo bell peppers and fast-growing rice.
In the past five years, the Centre for Space Breeding developed 12 rice and
wheat variants that greatly increased grain output, according to a statement
released last month by the centre.
(China Daily 10/11/2005 page2)