Tiller During Growth and Development Stages
Abstract
Over a period of eight consecutive years, a trial was performed in Chengdu and Yaan, China, in which field and laboratory tests involving four wheat series—and the three spike type, CN19, CN17, MY11 and CM107—were performed to examine the morphology of the coleoptile tiller (T0) and determine the growth characteristics of T0. The results are as follows: During all of the growth stages of T0, if the preceding several vegetative growth stages were slow, T0 exhibited a particular delayed growth effect on its main stem apex at earlier stages and the effect on the main stem of CM107 was the most distinct. T0 was accelerated for the tillers that appeared earlier and adjacent to the main stem apex, especially T1 of CN17 and CM107. When the growth cycle was shorter, the delay effect on the main stem was smaller, and less promotion of the other tillers was observed. The growth curve was similar to that of T3 or T11. No significance differences in terms of five yield factors were observed between single plants with T0 and those without T0. T0 was an important factor in measure the length of growth period, which has an important guiding significance in wheat cultivating
