ICH-66, a new high yielding and biotic stress-resistant castor hybrid suitable for rainfed conditions of Peninsular India
ICH-66, A NEW CASTOR HYBRID SUITABLE FOR RAINFED CONDITIONS OF PENINSULAR INDIA
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Authors
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A J PRABAKARAN
ICAR-Indian Institute of Oilseeds Research, Rajendranagar, Hyderabad-500 030, Telangana
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C LAVANYA
ICAR-Indian Institute of Oilseeds Research, Rajendranagar, Hyderabad-500 030, Telangana
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T MANJUNATHA
ICAR-Indian Institute of Oilseeds Research, Rajendranagar, Hyderabad-500 030, Telangana
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G BALAKISHAN
ICAR-Indian Institute of Oilseeds Research, Rajendranagar, Hyderabad-500 030, Telangana
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P DURAIMURUGAN
ICAR-Indian Institute of Oilseeds Research, Rajendranagar, Hyderabad-500 030, Telangana
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M SANTHA LAKSHMI PRASAD
ICAR-Indian Institute of Oilseeds Research, Rajendranagar, Hyderabad-500 030, Telangana
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S SENTHILVEL
ICAR-Indian Institute of Oilseeds Research, Rajendranagar, Hyderabad-500 030, Telangana
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G SURESH
ICAR-Indian Institute of Oilseeds Research, Rajendranagar, Hyderabad-500 030, Telangana
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P LAKSHMAMMA
ICAR-Indian Institute of Oilseeds Research, Rajendranagar, Hyderabad-500 030, Telangana
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R D PRASAD
ICAR-Indian Institute of Oilseeds Research, Rajendranagar, Hyderabad-500 030, Telangana
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K T RAMYA
ICAR-Indian Institute of Oilseeds Research, Rajendranagar, Hyderabad-500 030, Telangana
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PRADUMAN YADAV
ICAR-Indian Institute of Oilseeds Research, Rajendranagar, Hyderabad-500 030, Telangana
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J JAWAHARLAL
ICAR-Indian Institute of Oilseeds Research, Rajendranagar, Hyderabad-500 030, Telangana
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C SARADA
ICAR-Indian Institute of Oilseeds Research, Rajendranagar, Hyderabad-500 030, Telangana
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D K PATEL
ICAR-Indian Institute of Oilseeds Research, Rajendranagar, Hyderabad-500 030, Telangana
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C J PATEL
ICAR-Indian Institute of Oilseeds Research, Rajendranagar, Hyderabad-500 030, Telangana
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MUKESH PATEL
ICAR-Indian Institute of Oilseeds Research, Rajendranagar, Hyderabad-500 030, Telangana
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P SUNIL KUMAR
ICAR-Indian Institute of Oilseeds Research, Rajendranagar, Hyderabad-500 030, Telangana
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K S VARAPRASAD
ICAR-Indian Institute of Oilseeds Research, Rajendranagar, Hyderabad-500 030, Telangana
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A VISHNUVARDHAN REDDY
ICAR-Indian Institute of Oilseeds Research, Rajendranagar, Hyderabad-500 030, Telangana
Keywords:
Castor, Hybrid, ICH-66, Leafhopper, Peninsular India, Resistance, Root rot, WiltAbstract
ICH-66, a new castor hybrid has been developed at ICAR-Indian Institute of Oilseeds Research (ICAR-IIOR), Hyderabad, India and identified by Combined Varietal Identification Committee of Oilseed Crops during 2018 for release under rainfed areas of Peninsular India in kharif season. The hybrid was developed using the parents SKP-84 and ICS-164 and tested at station trials ofICAR-IIOR during 2013-14 and 2014-15. Considering its superiority over checks, it was evaluated in MLTs of AICRP (Castor) during 2015-16, 2016-17 and 2017-18 along with hybrid checks DCH-519 and DCH-177. ICH-66 recorded a mean seed yield of 1566 kg/ha which is 14.9 and 18.3 per cent higher than the checks DCH-519 (1324 kg/ha) and DCH-177 (1363 kg/ha) respectively. It also had a mean oil content of 48.6 per cent, which is 2.2 and 3.4 per cent higher than the check DCH-177 (47.0% oil content) and DCH-519 (47.6% oil content), respectively. The hybrid had a longer effective primary spike length (45 cm) and better 100-seed weight (29.0 g) under rainfed conditions compared with checks DCH-177 (39 cm and 27.3 g) and DCH-519 (44.8 cm and 26.4 g). The hybrid is medium in maturity duration (100-130 days for primary spike maturity), non-lodging and non-shattering type. The hybrid showed resistance against Fusarium wilt and Macrophomina root rot. It was also found resistant to leafhopper with hopper burn grade of 0 to 1 (on 0-4 scale) at multilocations in all the years of screening. Owing to its superiority for seed yield, oil content and biotic-stress resistance, it will be suitable for rainfed areas of Telangana, Andhra Pradesh, Karnataka, Tamil Nadu and Odisha states in India.
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