3.1 | Morphological characteristics
The 57 putative natural hybrids were perennial grasses, which were
similar in morphology and phenology to Roegneria species, such as
one spikelet per node and palea equaling lemma. Most of hybrids were
stronger than their surrounding plants (Figures 1a-c). These natural
hybrids combined some unique characteristics of R. stricta andR. turczaninovii , such as leaf pubescence, stem node pubescence
and basal leaf sheath pubescence (Figures 1d-o).
The height of hybrids RH1 (128.90 ± 1.27 cm) and hybrids RH2 (132.68 ±
1.86 cm) was higher than that of R. turczaninovii (118.63 ± 1.11
cm) and R. stricta (118.70 ± 1.54 cm) (Figure 2a). Hybrids RH1
(284.18 ± 12.24) and hybrids RH2 (389.63±13.72) showed more tillers thanR. turczaninovii (112.00 ± 9.72) and R. stricta (225.93 ±
15.35) (Figure 2b). The hybrids showed intermediate character betweenR. stricta and R. turczaninovii in the length of flag
leaves, width of flag leaves, length of
top
second leaf, width of
top
second leaf, length of awn, and length of the spike (Figures 2c-2g,
2i).