Polysaccharide composition during cotton seed fibre development: temporal differences between species and in different seasons

Table 3 Fibre quality, crystalline cellulose deposition doubling timepoint (DDPA) and environmental conditions under which different cotton species were grown

Fibre sample	Length/inch	Length uniformity	Short Fibre index	Strength/cN·tex^–1)	Elongation/%	Mic	Mat	Fineness/mTex	Solar radiation/(MJ·m⁻²)	Day length ave/h	GH temp min–max/°C	GH temp. mean/°C	Time to flower/d	Cellulose increase/DDPA^
SiPima 280 (Spring/Summer)	1.38	85.0	5.4	55.6	5.7	4.2	0.87	155.9	24.4	13.7	13–37	27	59.8	247
SiPima 280 (Autumn/Winter)	1.41	85.9	5.3	52.6	5.9	4.1	0.87	145.8	11.1	10.7	19–35	26	54.9	315
Coker 315-11 (Spring/Summer)	1.23	85.0	8.1	33.5	7.5	4.8	0.87	190.8	24.4	13.7	13–37	27	57.1	195
Coker 315-11 (Autumn/Winter)	1.29	85.3	7.0	32.1	8.0	4.3	0.85	177.8	11.1	10.7	19–35	26	54.9	285
BM13H (Spring/Summer)	0.85	81.7	18.7	30.0	8.1	7.0	0.91	307.4	27.8	14.3	22–36	30	50.7	187
BM13H (Autumn/Winter)	0.89	81.6	15.7	30.7	8.5	6.5	0.90	300.2	11.1	10.7	19–35	26	52.4	255
Correlation with DDPA (R²)	0.32	0.26	0.32	0.24	0.16	0.36	0.28	0.29	0.73	0.73	0.02–0.46	0.58	0.020	–
P	0.238	0.297	0.240	0.328	0.439	0.210	0.281	0.268	0.030	0.031	0.781–0.141	0.079	0.789	–

DDPA: Day degrees post anthesis, calculated as [(Max temp. – 12) + (Min temp. – 12)]/2

ISSN: 2523-3254