roots, shoots & grain yield in rice, maize & sorghum h e shashidhar, associates and students...
TRANSCRIPT
![Page 1: Roots, Shoots & Grain Yield in Rice, Maize & Sorghum H E Shashidhar, Associates and Students Department of Plant Biotechnology College of Agriculture,](https://reader030.vdocuments.us/reader030/viewer/2022032517/56649c9b5503460f94958e11/html5/thumbnails/1.jpg)
Roots, Shoots & Grain Yield in Roots, Shoots & Grain Yield in Rice, Maize & SorghumRice, Maize & Sorghum
H E Shashidhar, Associates and StudentsDepartment of Plant Biotechnology
College of Agriculture, GKVK, Bangalore 560065
![Page 2: Roots, Shoots & Grain Yield in Rice, Maize & Sorghum H E Shashidhar, Associates and Students Department of Plant Biotechnology College of Agriculture,](https://reader030.vdocuments.us/reader030/viewer/2022032517/56649c9b5503460f94958e11/html5/thumbnails/2.jpg)
Idea and Methodology• Plants with deep and extensive root systems ‘empower’ the
plant to access relatively more water from deeper soil layers,• Plants with deeper root system have a better chance of
survival in a depleting moisture regime,• Traditional accessions of rice manifest deep rooting nature
due to continued (natural) selection in adverse growth conditions,
• Genotypes with deep rooting nature may not necessarily be high yielding in germplasm accessions,
• Improved varieties have relatively shallow roots as they were subjected to selection
![Page 3: Roots, Shoots & Grain Yield in Rice, Maize & Sorghum H E Shashidhar, Associates and Students Department of Plant Biotechnology College of Agriculture,](https://reader030.vdocuments.us/reader030/viewer/2022032517/56649c9b5503460f94958e11/html5/thumbnails/3.jpg)
System of Root study
• Hydroponic– Root system grown in water or nutrient solution
• Aeroponic– Root system grown in air with periodic (fine) spray
of nutrients .
• Soil column– Roots measured in soil filled tubes, raised
structures etc
![Page 4: Roots, Shoots & Grain Yield in Rice, Maize & Sorghum H E Shashidhar, Associates and Students Department of Plant Biotechnology College of Agriculture,](https://reader030.vdocuments.us/reader030/viewer/2022032517/56649c9b5503460f94958e11/html5/thumbnails/4.jpg)
System of Root study
• Pin Box method– Roots screened in slanting bozes where one side
has pins attached to it to anchor roots
• Rhizotron– An artificial chamber where factors can be
controlled
![Page 5: Roots, Shoots & Grain Yield in Rice, Maize & Sorghum H E Shashidhar, Associates and Students Department of Plant Biotechnology College of Agriculture,](https://reader030.vdocuments.us/reader030/viewer/2022032517/56649c9b5503460f94958e11/html5/thumbnails/5.jpg)
![Page 6: Roots, Shoots & Grain Yield in Rice, Maize & Sorghum H E Shashidhar, Associates and Students Department of Plant Biotechnology College of Agriculture,](https://reader030.vdocuments.us/reader030/viewer/2022032517/56649c9b5503460f94958e11/html5/thumbnails/6.jpg)
![Page 7: Roots, Shoots & Grain Yield in Rice, Maize & Sorghum H E Shashidhar, Associates and Students Department of Plant Biotechnology College of Agriculture,](https://reader030.vdocuments.us/reader030/viewer/2022032517/56649c9b5503460f94958e11/html5/thumbnails/7.jpg)
![Page 8: Roots, Shoots & Grain Yield in Rice, Maize & Sorghum H E Shashidhar, Associates and Students Department of Plant Biotechnology College of Agriculture,](https://reader030.vdocuments.us/reader030/viewer/2022032517/56649c9b5503460f94958e11/html5/thumbnails/8.jpg)
![Page 9: Roots, Shoots & Grain Yield in Rice, Maize & Sorghum H E Shashidhar, Associates and Students Department of Plant Biotechnology College of Agriculture,](https://reader030.vdocuments.us/reader030/viewer/2022032517/56649c9b5503460f94958e11/html5/thumbnails/9.jpg)
![Page 10: Roots, Shoots & Grain Yield in Rice, Maize & Sorghum H E Shashidhar, Associates and Students Department of Plant Biotechnology College of Agriculture,](https://reader030.vdocuments.us/reader030/viewer/2022032517/56649c9b5503460f94958e11/html5/thumbnails/10.jpg)