International Journal of Plant Sciences

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Studies on Phenological Characters and Yield Attributes of Rice Genotypes at Graded Levels of Phosphorus


Affiliations
1 Indira Gandhi Krishi Vishwavidyalaya, Raipur (C.G.), India
2 Indian Council of Agricultural Research, Indian Institute of Rice Research, Hyderabad (Telangana), India
     

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Phosphorus is one of the most limiting nutrients for plant growth in soil in both acidic and alkaline soils. To screen the genotypes for their P use efficiency and response to its application the genotypes need to be grown under different gradients so as to compare their performance under different regimes of P application. Therefore, low P plots were divided into 4 sub-plots with different gradients (0,20,40 and 60 kg P2O5/ha, respectively). Results showed that at 0 (absolute control) level of P2O5, rice genotypes differed widely among all the phenological and yield attributing characters studied. Root length measured was recorded lowest for Mahsuri cultivar (18cm) whereas highest ischolar_main length at maturity stage was recorded for Vikas and Vasumati cultivars (26cm each). At 20 Kg P2O5/ha level, ischolar_main length measured was recorded lowest for Mahsuri cultivar (19cm) whereas highest ischolar_main length at maturity stage was recorded for Akshaydhan cultivar (30cm). At 40 Kg P2O5/ha level, ischolar_main length measured was recorded lowest for MTU 1010 cultivar (20cm) whereas highest ischolar_main length at maturity stage was recorded for Vasumati cultivar (30cm). Similarly At 60 Kg P2O5/ha level, for plant height the values ranged from a low of 58cm for Rp-bio-226 cultivar to a high of 99cm for Vardhan cultivar. Significant but not steep variations were noticed among cultivars for ischolar_main length, flag leaf length and effective number of tillers characteristics at maturity stage.

Keywords

Phenological Characters, Yield Attributes, Rice Genotypes, Phosphorus.
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  • Studies on Phenological Characters and Yield Attributes of Rice Genotypes at Graded Levels of Phosphorus

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Authors

Himanshu Patel
Indira Gandhi Krishi Vishwavidyalaya, Raipur (C.G.), India
Brajendra
Indian Council of Agricultural Research, Indian Institute of Rice Research, Hyderabad (Telangana), India
V. N. Mishra
Indira Gandhi Krishi Vishwavidyalaya, Raipur (C.G.), India
V. P. Bhadana
Indian Council of Agricultural Research, Indian Institute of Rice Research, Hyderabad (Telangana), India

Abstract


Phosphorus is one of the most limiting nutrients for plant growth in soil in both acidic and alkaline soils. To screen the genotypes for their P use efficiency and response to its application the genotypes need to be grown under different gradients so as to compare their performance under different regimes of P application. Therefore, low P plots were divided into 4 sub-plots with different gradients (0,20,40 and 60 kg P2O5/ha, respectively). Results showed that at 0 (absolute control) level of P2O5, rice genotypes differed widely among all the phenological and yield attributing characters studied. Root length measured was recorded lowest for Mahsuri cultivar (18cm) whereas highest ischolar_main length at maturity stage was recorded for Vikas and Vasumati cultivars (26cm each). At 20 Kg P2O5/ha level, ischolar_main length measured was recorded lowest for Mahsuri cultivar (19cm) whereas highest ischolar_main length at maturity stage was recorded for Akshaydhan cultivar (30cm). At 40 Kg P2O5/ha level, ischolar_main length measured was recorded lowest for MTU 1010 cultivar (20cm) whereas highest ischolar_main length at maturity stage was recorded for Vasumati cultivar (30cm). Similarly At 60 Kg P2O5/ha level, for plant height the values ranged from a low of 58cm for Rp-bio-226 cultivar to a high of 99cm for Vardhan cultivar. Significant but not steep variations were noticed among cultivars for ischolar_main length, flag leaf length and effective number of tillers characteristics at maturity stage.

Keywords


Phenological Characters, Yield Attributes, Rice Genotypes, Phosphorus.

References