Extended Data Fig. 4: Comparison of grain yield and agronomic traits of perennial rice cultivar PR23 from a single planting and replanted annual rice seasonally over five years with 10 seasons during 2016–2020.
From: Sustained productivity and agronomic potential of perennial rice
The experiment was conducted at three field trial locations in Yunnan, China: Mengzhe (21°57′ N, 100°14′ E, 1,255 m), Xinping (24°02′ N, 101°34′ E, 760 m) and Menglian (22°33′ N, 99°59′ E, 980 m). a-c, Grain yield of annual rice replanted from seed each season and perennial rice planted once in 2016 at three field trial locations (Mg ha−1). The error bar represents the standard error of each treatment. d, Duration of perennial rice (d). e, Regrowth rate of perennial rice (%). f, Panicle number m−2 of perennial rice. g, Spikelet number panicle−1 of perennial rice. h, Grain weight of perennial rice (mg). i, Seed setting rate of perennial rice (%). F1–F5 represent the first seasons of years 1–5. S1–S5 represent the second seasons of years 1–5. The elite annual rice cultivars for Mengzhe, Xinping and Menglian were Diantun502, Wenfu6 and Yunhui290, respectively, and all three locations are double cropping paddy areas. The data are means from Experiment 3, with l.s.d. for these traits being: a-c) 1.7; d) 22; e) 4; f) 96; g) 18; h) 2; and i) 9 (N = 81; P < 0.05) (see Supplementary Table 4).
