Developing of sunflower lines and hybrids resistant to herbicides
Julia Encheva, Galin Georgiev, Nina Nenova, Daniela Valkova
Abstract: The objective of this study was to determine the reaction of some sunflower restorer lines, maintainer and hybrids to some Acetolactate synthase (ALS) inhibitors. The objective of this study was to determine the reaction of some sunflower restorer lines, maintainer and hybrids to some Acetolactate synthase
(ALS) inhibitors. To create lines resistant to herbicide of imidozolinon group three different sources are used: one from the United States-HA-425 line provided by Jerry Miller (with gene Ahasl 1-1), one of BASF (with gene Ahasl 1-3 named ALPlus), and one Bulgarian-from the wild species H. argophyllus. Received 1184 fertility restorer lines and 61 lines maintaner of sterility, resistant to herbicides from the group of imidazolinones Pulsar 40 + Stomp 330 EU. During the period of study 302 resistant to IMI hybrids were tested. Evaluation of seed yield and oil yield was made. Yield above mean standard was reported in 8 hybrids possessed gene for resistance to herbicides Pulsar 40 + Stomp 330 EC at homozygous state. Best results are reported in combinations BTI-(A) M1 × 100/1/2 R (108.70%), BTI-(A) M1 × 102/3/3 (107.90%) and BTI-(A) M1 × 100/2/3 R (107.60%). Seed yield above the mean standard is registered at 55 combinations in which one parent is resistant to herbicides. The highest percentage of the mean standard showed hybrids: 846 A × BTI-R1 (137.60%), BTI-(A) M1 × 242 R (126.20%) and 813 A × BTI-R1 (125.50%). Hybrid combination 336 A × C57/ 1 was relieved with the highest oil content 52.48% in air dry seeds. Hybrid exceeded the mean standard by oil per hectare with 23.09%. There are 328 lines of fertility restorers with genes for resistance Ahasl 1-2 to herbicide Express from the group of sulfonylurea.
(ALS) inhibitors. To create lines resistant to herbicide of imidozolinon group three different sources are used: one from the United States-HA-425 line provided by Jerry Miller (with gene Ahasl 1-1), one of BASF (with gene Ahasl 1-3 named ALPlus), and one Bulgarian-from the wild species H. argophyllus. Received 1184 fertility restorer lines and 61 lines maintaner of sterility, resistant to herbicides from the group of imidazolinones Pulsar 40 + Stomp 330 EU. During the period of study 302 resistant to IMI hybrids were tested. Evaluation of seed yield and oil yield was made. Yield above mean standard was reported in 8 hybrids possessed gene for resistance to herbicides Pulsar 40 + Stomp 330 EC at homozygous state. Best results are reported in combinations BTI-(A) M1 × 100/1/2 R (108.70%), BTI-(A) M1 × 102/3/3 (107.90%) and BTI-(A) M1 × 100/2/3 R (107.60%). Seed yield above the mean standard is registered at 55 combinations in which one parent is resistant to herbicides. The highest percentage of the mean standard showed hybrids: 846 A × BTI-R1 (137.60%), BTI-(A) M1 × 242 R (126.20%) and 813 A × BTI-R1 (125.50%). Hybrid combination 336 A × C57/ 1 was relieved with the highest oil content 52.48% in air dry seeds. Hybrid exceeded the mean standard by oil per hectare with 23.09%. There are 328 lines of fertility restorers with genes for resistance Ahasl 1-2 to herbicide Express from the group of sulfonylurea.
Keywords: Helianthus annuus; herbicides; hybrids; lines; resistance; sunflower
Date published: 2017-08-09
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