从早稻仿野87－707品系种子中诱导的愈伤组织，在氨基酸培养基中进行细胞悬浮培养，取该细胞悬浮培养物游离的原生质体，培养在KM_8P培养基中得到原生质体再生愈伤组织，经不同分化培养基的培养均得到再生植株，当小苗长到5～8cm时，从试管移栽到蛭石中过渡，待小苗长到10-15cm时，再移栽到盆钵中，同时播种该品系的种子作为对照。在各生育期分别对再生植株和对照株的某些性状作多次调查，观察株高、分蘖数、穗长、结实率、穗粒重和有效穗粒千粒重等性状，认为大多数再生植株性状正常，但个别的却发生了明显的变异。 Callus induced from the seeds of early morning rice Ichino 87-707 strain was cultured in suspension in amino acid medium, and the free protoplasts of the suspension cultures were collected and cultured in KM_8P medium to obtain protoplast regenerated callus , The regenerated plants were obtained through the culture of different differentiation media. When the seedlings grew to 5 ~ 8cm, the transition from tube to vermiculite was made. When the seedlings grew to 10-15cm, they were transplanted to pots, Seeds of this line were sown as controls. In each growth period, some characters of regenerated plants and control plants were investigated several times. The characters of plant height, tiller number, spike length, seed setting rate, grain weight per spike and effective grain weight per spike were observed. Most regenerated plant characters Normal, but some obvious changes have taken place.