Seasonal and diurnal patterns of non-structural carbohydrates in source and sink tissues in field maize

BMC Plant Biology

Table 1 Diurnal carbon assimilation and allocation at different growth periods

Growth period	Hybrids	A_D	C_T	C_T/A_D	C_A/A_D	Starch/A_D	TSC/A_D
Growth period	Hybrids	μmol C g⁻¹ DM	μmol C g^− 1 DM	%	%	%	%
V7	XY335	29.32	25.43	86.73	13.27	7.43	5.84
	DH605	29.66	24.97	84.20	15.80	9.13	6.66
	ZD958	28.38	23.88	84.14	15.86	9.80	6.07
V13	XY335	25.29	22.20	87.81	12.19	5.73	6.46
	DH605	25.55	22.51	88.10	11.90	7.18	4.72
	ZD958	25.41	22.26	87.62	12.38	7.48	4.90
28 DAP	XY335	14.39	13.92	96.75	3.25	−1.01	4.26
	DH605	15.16	14.51	95.71	4.29	−2.84	7.12
	ZD958	14.81	14.26	96.34	3.66	−3.17	6.83

A_D represents the total net carbon accumulation that was calculated by diurnal photosynthesis values, C_T represents the transported sugars and was the result of A_D minus C_A, and C_A represents carbon accumulation in certain maize leaves, which was approximately equal to the non-structural carbohydrates (NSC) concentration. Hence, C_A was calculated by the sum value of starch and total soluble carbohydrates (TSC). The ratios of transport, accumulation, starch and total soluble carbohydrates participation were summarized. Abbreviations: V7, the 7^th leaf expanded stage; V13, the 13^th leaf expanded stage; 28 DAP, 28 days after pollination

ISSN: 1471-2229