Mostly used methods are introduced in detail, including fuzzy method, rough sets theory, cloud theory, evidence theory, artificial neural networks, genetic algorithms and induction learning.
The results showed that genetic trait of rice and quantity of 2,4-D were the key elements to callus induction from mature rice seeds and suspension culture of rice cells.
结果表明：水稻品种的遗传特性、2，4-D浓度是诱导水稻愈伤组织、水稻悬浮细胞系培养的关键因素。
3
It was observed that there were different genotypes for genetic flexibility in flowering photoperiodic response, although the populations had always been subjected to the same photoperiodic induction.