Fig 1.
TLR, FLR and NR denote: fine lateral roots, thick lateral root, and nodal root.
Table 1.
Organic matter, total N, P, and K content of soil mixtures used in 2007, 2008, and 2009 rice root experiments.
Table 2.
Experiments and treatments.
Fig 2.
Changes in mean diameter of three types of rice roots in cultivar experiment following transplanting.
FLR, TLR and NR denote different root types: fine lateral roots, thick lateral roots, and nodal roots, respectively. The numbers following the letters denote Exp.1 and 2. Cultivars treatments in Exp.1: V1, ‘Nipponbare’; V2, ‘Wuxiangjing 14’; V3, ‘Yangdao 6’. The values are the means of 3 replicates (± SE).
Fig 3.
Changes in mean diameter of three types of rice roots in N experiments following transplanting.
FLR, TLR and NR denote different root types: fine lateral roots, thick lateral roots, and nodal roots, respectively. The numbers following the letters denote Exp.3 and 4, and the cultivar ‘Wuxiangjing 14’ was used. N1, 0 N; N2, 150 kg N ha−1; N3, 300 kg N ha−1. The values are the means of 3 replicates (± SE).
Fig 4.
Changes in mean diameter of three types of rice roots in water experiments following transplanting.
FLR, TLR and NR denote different root types: fine lateral roots, thick lateral roots, and nodal roots, respectively. The numbers following the letters denote Exp.5 and 6, and the cultivar ‘Wuxiangjing 14’ was used. W1, keeping 1–2 cm water layer; W2, wetting irrigation; W3, dry cultivation. The values are the means of 3 replicates (± SE).
Fig 5.
Changes in length of three types of rice roots in cultivar experiments following transplanting.
FLR, TLR and NR denote: fine lateral roots, thick lateral root, and nodal root, and the numbers following the letters denote Exp. 1 and 2, respectively. V1, ‘Nipponbare’; V2, ‘Wuxiangjing 14’; V3, ‘Yangdao 6’. The values are the means of 3 replicates (± SE).
Fig 6.
Changes in length of three types of rice roots in N experiments following transplanting.
FLR, TLR and NR denote different root types: fine lateral roots, thick lateral roots, and nodal roots, respectively. The numbers following the letters denote Exp.3 and 4, and the cultivar ‘Wuxiangjing 14’ was used. N1, 0 N; N2, 150 kg N ha−1; N3, 300 kg N ha−1. The values are the means of 3 replicates (± SE).
Fig 7.
Changes in length of three types of rice roots in water experiment following transplanting.
FLR, TLR and NR denote different root types: fine lateral roots, thick lateral roots, and nodal roots, respectively. The numbers following the letters denote Exp.5 and 6, and the cultivar ‘Wuxiangjing 14’ was used. W1, keeping 1–2 cm water layer; W2, wetting irrigation; W3, dry cultivation. The values are the means of 3 replicates (± SE).
Fig 8.
Changes in surface area percentage of three types of rice roots in cultivar experiments following transplanting.
FLR, TLR and NR denote: fine lateral root, thick lateral root, and nodal root, and the numbers following the letters denote Exp. 1 and 2, respectively. V1, ‘Nipponbare’; V2, ‘Wuxiangjing 14’; V3, ‘Yangdao 6’. The values are the means of 3 replicates (± SE).
Fig 9.
Changes in surface area percentage of three types of rice roots in N experiments following transplanting.
FLR, TLR and NR denote different root types: fine lateral roots, thick lateral roots, and nodal roots, respectively. The numbers following the letters denote Exp.3 and 4, and the cultivar ‘Wuxiangjing 14’ was used. N1, 0 N; N2, 150 kg N ha−1; N3, 300 kg N ha−1. The values are the means of 3 replicates (± SE).
Fig 10.
Changes in surface area percentage of three types of rice roots in water experiments following transplanting.
FLR, TLR and NR denote different root types: fine lateral roots, thick lateral roots, and nodal roots, respectively. The numbers following the letters denote Exp.5 and 6, and the cultivar ‘Wuxiangjing 14’ was used. W1, keeping 1–2 cm water layer; W2, wetting irrigation; W3, dry cultivation. The values are the means of 3 replicates (± SE).