Table 1 A summary of the phenotypic traits and a description on how they were scored.
From: Genomic resources for a historical collection of cultivated two-row European spring barley genotypes
Trait | Method |
|---|---|
Developmental traits | |
Days to awn tipping | 50% of the main tiller awns per plot have emerged up to 1 cm out of the flag leaf sheath. Recorded as days since sowing |
Days to heading | 50% of the main tiller spikes per plot have emerged halfway out of the flag leaf sheath. Recorded as days since sowing |
Days to senescence | 50% of the main tiller peduncles per plot are senescent (yellow). Recorded as days since sowing |
Days from awn tipping to heading | Derived from days to awn tipping and days to heading |
Days from awn tipping to senescence | Derived from days to awn tipping and days to senescence |
Days from heading to senescence | Derived from days to heading and days to senescence |
Growth habit (GH) | Visual evaluation using a scale of 1 (erect), 2 (intermediate) and 3 (prostrate). Recorded at the onset of stem elongation |
Height and length traits | |
Peduncle base height | Height of the base of the peduncle in cm |
Flag leaf blade height | Height of the flag leaf sheath in cm |
Culm height | Height of the base of the spike in cm |
Plant height | Height of the top of the spike in cm |
Awn tip height | Height of the tip of the awns in cm |
Spike base to flag leaf | Calculated distance from base of spike to flag leaf sheath (auricle) in cm |
Peduncle length | Calculated distance from base of spike to base of peduncle in cm |
Awn length | Calculated distance from tip of awns to top of spike in cm |
Spike culm ratio | Spike length divided by culm height |
Spike traits (recorded on 10–15 main tiller traits per plot after harvest) | |
Rachis node number | Number of rachis nodes |
Spike length | Spike length in cm |
Spike density | Rachis node number divided by spike length |
Grain traits (recorded on 10–15 main tiller traits per plot after harvest) using a Marvin Seed Analyzer 6 | |
Grain area | Area of all kernels per spike in mm2. Recorded using the automatic grain area calculation function in the Marvin SeedAnalyzer 6 software |
Kernel roundness | Roundness of all kernels per spike. Recorded using the automatic kernel roundness calculation function in the Marvin SeedAnalyzer 6 software |
Thousand kernel weight | Calculated from the number and weight of the kernels using the Marvin SeedAnalyzer 6 software |
Grain length | Length of all kernels per spike in cm |
Grain width | Width of all kernels per spike in cm |
Spike traits (recorded on 10–15 main tiller traits per plot after harvest) | |
Infertile florets at top and bottom ( = edges) of spike | Number of infertile florets at the top of spike down to first fertile floret + number of infertile florets at the base of spike up to first fertile floret |
Infertile florets in the middle of the spike | Number of infertile florets in the centre of the spike |
Number of fertile grain | Total number of fertile florets per spike |
Percent of fertile florets | Total number of fertile florets per spike divided by rachis node number |
Number infertile florets | Total number of infertile florets per spike |
