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Table 2 Preferential Geographic Distribution Pattern of Abiotic Stress Tolerant Rice Accessions

From: Preferential Geographic Distribution Pattern of Abiotic Stress Tolerant Rice

Abiotic stress Total number of accessions screened Highly tolerant accessionsa Preferred latitude Preferred longitude Highly tolerant accessions (%) No of highly tolerant accessions from Bangladesh Highly tolerant accessions from Bangladesh (%)
Cold 6612 81 20-24°N 90-110°E 1.2 16 19.8
Salt 8004 31 20-24°N 90-100°E 0.4 26 83.9
Alkali 2649 83 20-24°N 90-100°E 3.1 48 57.8
Zinc Field 960 0 20-24°N 90-100°E 0.0 (13)b (28.3)b
Greenhouse 119 3 20-24°N 80-90°E 2.5 NA NA
Deepwater 1200 64 20-24°N 90-100°E 5.3 61 95.3
Flash flood 18,087 371 20-28°N 80-90°E 2.1 51 13.7
Flooded seed germination (AG) 8114 6 20-24°N 90-100°E 0.1 2 33.3
Drought - yield performance 988 66 20-24°N 90-100°E 5.3c 24 36.4
Drought -non-yield performance screening 38,433 na na na 0-37.6 2750 0-28.4
  1. na not analysed as vegetative stage drought tolerance is not correlated with yield performance, NA no accession of Bangladesh screened
  2. aList of highly tolerant accessions can be found in Additional file 4: Table S1
  3. bTolerant accessions were considered for rarity estimation, as no accession was found highly tolerant in the zinc-deficient field screening
  4. cAlthough 6.7% accessions were found drought tolerant after field screening by yield performance, however, drought tolerant accessions were defined as any accessions that appeared in the top 25% in grain yield in any crop seasons (Torres et al. 2013). However, we excluded accessions of wet-season that were included in the top 25% in grain yield