Abstract
The present study was undertaken to find out the effect of priming treatments to enhance seed quality of naturally aged seeds of forage sorghum varieties. The experiment was conducted at Research Farm and Seed technology laboratory, Department of Seed Science & Technology, CCS Haryana Agricultural University, Hisar (Haryana), India during kharif season, 2018. Three naturally aged seed lots (fresh, one year old and two year old) of two single-cut forage sorghum varieties (HC 136 and HJ 541) were tested with five priming treatments [T1: Untreated, T2: Hydration-dehydration (6 hrs.), T3: Hydration- dehydration (6 hrs.) + 0.25% thiram treatment, T4: Hydration with GA3 @ 50 ppm for 6 hrs., T5: Hydration with sodium molybdate @ 500 ppm for 6 hrs.]. Among varieties, HJ 541 performed better than HC 136 with each priming treatments. Among naturally aged seed lots, maximum improvement was observed in freshly harvested seed lot (L1) while, minimum improvement was found in two year old seed lot (L3) when treated with different treatments. Among priming treatments, T4 i.e. hydration with GA3 @ 50 ppm for 6 hrs showed highest improvement in speed of emergence in both the varieties and each seed lot followed by Hydration – dehydration + 0.25% Thiram (T3) and Hydration with sodium molybdate (T5). Based on the results, it was concluded that fresh seed lot of HJ 541 variety with priming treatment of hydration with GA3 @ 50 ppm for 6 hrs proved better on majority of the seed viability and vigour parameters.
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Claims 7
Claim · model-written summary
HJ 541 performed better than HC 136 under each priming treatment.
Verbatim
e0“HJ 541 performed better than HC 136 with each priming treatments”
t0“forage sorghum”
Claim · model-written summary
Freshly harvested seeds showed maximum improvement under priming.
Verbatim
e0“maximum improvement was observed in freshly harvested seed lot (L1) while, minimum improvement was found in two year old seed lot (L3) when treated with different treatments”
t0“forage sorghum”
Claim · model-written summary
Two-year-old seeds showed minimum improvement under priming.
Verbatim
e0“maximum improvement was observed in freshly harvested seed lot (L1) while, minimum improvement was found in two year old seed lot (L3) when treated with different treatments”
t0“forage sorghum”
Claim · model-written summary
GA3 hydration showed the highest improvement in emergence speed.
Verbatim
e0“T4 i.e. hydration with GA3 @ 50 ppm for 6 hrs showed highest improvement in speed of emergence in both the varieties and each seed lot followed by Hydration – dehydration + 0.25% Thiram (T3) and Hydration with sodium molybdate (T5)”
t0“forage sorghum”
Claim · model-written summary
Thiram hydration ranked second for emergence speed improvement.
Verbatim
e0“highest improvement in speed of emergence in both the varieties and each seed lot followed by Hydration – dehydration + 0.25% Thiram (T3) and Hydration with sodium molybdate (T5)”
t0“forage sorghum”
Claim · model-written summary
Sodium molybdate hydration followed Thiram for emergence speed improvement.
Verbatim
e0“speed of emergence in both the varieties and each seed lot followed by Hydration – dehydration + 0.25% Thiram (T3) and Hydration with sodium molybdate (T5)”
t0“forage sorghum”
Claim · model-written summary
Fresh HJ 541 seeds with GA3 hydration performed best on most viability and vigour measures.
Verbatim
e0“fresh seed lot of HJ 541 variety with priming treatment of hydration with GA3 @ 50 ppm for 6 hrs proved better on majority of the seed viability and vigour parameters”
t0“forage sorghum”
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