Table 4.
Correlation between carbohydrate molecular spectral characteristics and carbohydrate cncps fractions in model forage (Medicago sativa spp. Sativa: Alfalfa).
| Item a | CA4 % CHO | CB1 % CHO | CB2 % CHO | CB3 % CHO | CC % CHO | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| r b | p Value | r | p Value | r | p Value | r | p Value | r | p Value | |
| Structural CHO related Spectral Profiles | ||||||||||
| A_StCHO | 0.71 | 0.111 | 0.71 | 0.111 | −0.60 | 0.208 | −0.77 | 0.072 | 0.09 | 0.872 |
| H_1415 | 0.83 | 0.039 | 0.83 | 0.039 | −0.62 | 0.192 | −0.62 | 0.192 | −0.19 | 0.725 |
| H_1370 | 0.75 | 0.084 | 0.75 | 0.084 | −0.70 | 0.125 | −0.81 | 0.050 | 0.06 | 0.913 |
| H_1315 | 0.79 | 0.059 | 0.79 | 0.059 | −0.62 | 0.191 | −0.79 | 0.059 | 0.00 | 1.000 |
| A_1315 | −0.43 | 0.397 | −0.43 | 0.397 | −0.14 | 0.787 | −0.43 | 0.397 | 0.83 | 0.042 |
| Cellulosic Compounds Related Spectral Profiles | ||||||||||
| H_1244 | 0.79 | 0.059 | 0.79 | 0.059 | −0.47 | 0.346 | −0.65 | 0.165 | −0.09 | 0.868 |
| A_CELC | 0.71 | 0.111 | 0.71 | 0.111 | −0.31 | 0.544 | −0.49 | 0.329 | −0.09 | 0.872 |
| Total CHO related Spectral Profiles | ||||||||||
| A_CHO | 0.77 | 0.072 | 0.77 | 0.072 | −0.43 | 0.397 | −0.71 | 0.111 | -0.03 | 0.957 |
| H_1150 | 0.75 | 0.084 | 0.75 | 0.084 | −0.52 | 0.288 | −0.75 | 0.084 | 0.03 | 0.957 |
| H_1100 | 0.75 | 0.084 | 0.75 | 0.084 | −0.52 | 0.288 | −0.75 | 0.084 | 0.03 | 0.957 |
| H_1025 | 0.75 | 0.084 | 0.75 | 0.084 | −0.52 | 0.288 | −0.75 | 0.084 | 0.03 | 0.957 |
| Non-structural CHO related Spectral Profiles | ||||||||||
| A_non-st CHO | 0.71 | 0.111 | 0.71 | 0.111 | -0.60 | 0.208 | −0.77 | 0.072 | 0.09 | 0.872 |
| H_895 | 0.39 | 0.441 | 0.39 | 0.441 | -0.65 | 0.158 | −0.65 | 0.158 | 0.13 | 0.805 |
| Spectral Ratio Profiles | ||||||||||
| A_StCHO/A_CHO ratio | 0.66 | 0.156 | 0.66 | 0.156 | −0.43 | 0.397 | −0.14 | 0.787 | −0.49 | 0.329 |
| A_Non-stCHO/A_CHO ratio | −0.62 | 0.188 | −0.62 | 0.188 | 0.00 | 1.000 | 0.00 | 1.000 | 0.41 | 0.414 |
| A_Non-stCHO/A_StCHO ratio | −0.65 | 0.165 | −0.65 | 0.165 | 0.50 | 0.312 | 0.26 | 0.612 | 0.21 | 0.695 |
| A_CELC/A_CHO ratio | 0.37 | 0.469 | 0.37 | 0.469 | −0.20 | 0.704 | −0.26 | 0.623 | 0.03 | 0.957 |
| A_CELC/A_StCHO ratio | 0.03 | 0.957 | 0.03 | 0.957 | 0.37 | 0.469 | 0.03 | 0.957 | 0.09 | 0.872 |
a CNCPS: Cornell Net Carbohydrate and Protein System; Carbohydrate CNCPS fractions undetected in alfalfa populations include: CA1 fraction (volatile fatty acids), CA2 fracton (lactic acid), and CA3 fraction (other organic acids). Measurable CNCPS alfalfa carbohydrate fractions include: CA4 (sugar), CB1 (starch), CB2 (soluble fiber), CB3 (available NDF) and CC (indigestible fiber); b r: correlation coefficient.