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Accueil Tous les numéros Volume 26 (2019) OCL, 26 (2019) 13 Full HTML

Table 1

Performance of new USDA Phomopsis-resistant sunflower inbred line releases as testcrosses, compared to those of previously released USDA lines and commercial hybrids adapted to North America, four environments, 2011–2016.

Hybrid Yield (kg ha–1) Oil (g kg–1) Lodging (score)a Phomopsis (%)b
New USDA testcrosses
   CMS HA 412HO/RHA 485 2629 abc 449 a 2.6 a 9.9 ab
   CMS HA 467/RHA 485 2339 ab 422 ab 2.6 a 8.5 ab
   CMS HA 412HO/RHA 486 2614 ab 418 b 2.8 a 0.0 a
   CMS HA 467/RHA 486 2898 ab 374 d 2.5 a 0.0 ab
   CMS HA 487/RHA 464 2532 ab 402 bc 1.1 a 24.8 b
   CMS HA 487/RHA 468 2565 ab 395 c 2.5 a 39.2 b
 
Previous USDA testcrosses
   CMS HA 412HO/RHA 373 2345 b 408 bc 2.8 a 54.9 bc
   CMS HA 412HO/RHA 377 2094 b 418 b 3.0 a 70.7 c
   CMS HA 412HO/RHA 464 2235 b 423 b 1.8 a 13.4 ab
   CMS HA 412HO/RHA 468 2493 ab 429 ab 2.8 a 12.1 ab
   CMS HA 467/RHA 464 2008 b 369 d 2.3 a 44.7 b
   CMS HA 467/RHA 468 2363 b 388 cd 2.5 a 36.0 b
 
Commercial hybrids
   Croplan 3080 2582 ab 422 b 2.7 a 50.5 b
   Croplan 7717 HO/CL/DM 2872 ab 407 bc 2.0 a 26.2 b
   Mycogen 8H449CLDM 2991 a 439 ab 2.8 a 38.0 b
   Nuseed Camaro II 2884 ab 410 bc 2.3 a 23.1 b
   Pannar 7813NS 2784 ab 395 c 2.6 a 47.6 b
 
CV (%) 16.0 2.1 29.9 34.7
 
Correlation (Pearson)
   Yield 0.37*** –0.41*** –0.39***
   Oil 0.05 –0.29***
   Lodging 0.17**
a

Lodging was scored on a 1 to 9 scale with 1 indicating no lodged or leaning plants, 9 indicating all plants completely lodged. Hybrids with the highest and lowest lodging scores were significant at p = 0.06.

b

Heavy, natural infestation at all four environments. Diseased plots were used for yield data.

c

Common non-superscript letters denote hybrids that are not significantly different at the p < 0.05 level.

**, *** Significant at the 0.01 and 0.001 probability levels, respectively.

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