Flower Production Records

Daily records of each cutting may be kept to determine whether particular cuttings have abnormally high aberration rates compared to 

Other cuttings which bloomed on that or later days. Similarly, by knowing which cutting is used, i.e., by tagging individual cuttings (Fig. 5), one can get an estimate of the age of the inflorescence. For example, flowers produced later on an inflorescence may have different mutation rates and/or more stunted or fewer hairs than those produced on earlier flowers. 38) 

Prior to irradiation, all flowers and mature buds (those within 5-7 days of opening under our growth conditions and having completed all cell division) are removed. Older buds are too mature to yield a genetic 

---

Grind flowers of sulphur to a fine powder and weigh out 2 g and add it to a hot solution of 6 g sodium sulphite in 30 cm water. Boil the suspension until most of the sulphur has dissolved. Filter while hot under suction collecting the filtrate in a clean receiver. Evaporate the filtrate until crystallisation starts. Cool in an ice bath to allow further crystallisation. Filter under suction and dry in an oven at 40 C. Record the weight of your product and calculate the % yield based on sulphite. The purity of the thiosulphate produced can be assayed by titration as in Sec.7.3.3. 

---