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DST-SERB (N-PDF): Phenotyping of foxtail millet genotypes under high-throughput platform for water use, yield related traits and phosphorous deficiency (2019-21)

DST-SERB (N-PDF): Phenotyping of foxtail millet genotypes under high-throughput platform for water use, yield related traits and phosphorous deficiency (2019-21)

Foxtail millet (Setaria italica L.) is one of the important millets mostly cultivated in the semi-arid regions of Asia and Africa. Phosphorous (P) is an important macronutrient for all living organisms as it is involved in several important biochemical functions and critically important for plant growth. Limited availability of P is reported to be a major problem, which accounts ~50% of world agricultural soils and particularly in Sub Saharan Africa and parts of South East Asia.

Low P in soil profile leads to poor seedling emergence, especially for small-seeded crops like the millets, and is a major constraint for higher millet yield. The present study aims to focus on the assessment of P use efficiency i.e., the ratio of biomass produced to total P extracted in foxtail millet germplasm for low and high P soil conditions. In order to assess the link between water use and phosphorous use efficiency, the water use will be assessed by lysimetric facility which helps us to understand the underlying mechanisms by which the species respond to P. It is anticipated that this work reveals the relationships between utilization of P, water use efficiency and its link to crop production success.

The main objectives are:

1) Screen and phenotype foxtail millet mini-core collection for canopy development related traits (3D leaf area, plant height, and biomass) using high throughput phenotyping system.

2)Assessment of selected foxtail millet entries for plant water use, biomass and yield-related components grown under low and high P growing conditions in Lysimetric system.

3) Assessment of root parameters such as root length, surface area, volume and root hairs in selected foxtail millet entries.

4) Biochemical estimation of P content and identification of plant traits associated with low P adaptation.

The proposed work would help to understand the mechanisms of foxtail millet adaptation to low P soil, identify the traits related to low P and genotypes adapted to low P soil for foxtail millet breeding programs to develop low P adapted cultivars

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