Agronomic interventions for high seed productivity and quality of wheat (Triticum aestivum)

Abstract

An experiment was carried out at the ICAR- IISS, Mau, Uttar Pradesh, India during winters of 2013-14 and 2014- 15, to assess the effect of seed rate on growth, seed yield, yield attributes and seed quality for wheat crop in split plot design (SPD) with three replications. The genotype HD-2733 had significantly higher seed and seedling traits,viz. germination (97.04%), root length (21.64 cm), seedling length (35.54 cm), seedling dry weight (0.208g), vigour index I (3453.8) and vigour index II (20.19). Among the PGRs, the IAA (Indole acetic acid) significantly increased germination (97.11%), root length (22.19 cm), shoot length (14.19cm), seedling length (36.38 cm), seedling dry weight (0.205g), vigour index I (3534.4) and vigour index II (19.95). The seeding rate (75 kg/ha) produced significantly higher tillers/ plant at harvest (6.76), enhanced the spikelet/spike (19.33). The variety PBW 502 showed significantly higher number of tillers/plant at harvest and number of tillers /m row length at harvest than HD 2733 and PBW 550. The different seed rates (50, 75, 100 kg/ha) were tested, among the seed rate (75 kg/ha) significantly enhanced biological yield, seed yield and economics of wheat seed production. Among the genotypes, the significantly highest processed seed yield (3.77 t/ha), biological yield (11.08 t/ha) was obtained with PBW 502. Among the PGRs, the IAA significantly increased processed seed yield (3.77 t/ha). Therefore, IAA was found more promising PGR for enhancement of yield potential in wheat crops compared to Gibberellic acid (GA3). Higher net return (` 90×103), B:C ratio (>3.0) were realized in PBW 502 at 75 kg/ha seed rate with use of plant growth hormones.

Keywords

• Growth hormones
• Seed productivity
• Seed quality parameters
• Seed yield and Yield attributes