All of the genetic factors , maternal environment , storage conditions , collecting methods and the degree of maturity , moisture content , size , shape and colour of seeds can affect hardseed percentage 遺傳因素、母株環(huán)境、貯藏條件、采收方法、種子本身的成熟度、含水量、大小、形狀及顏色都能影響種子硬實(shí)率。