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Screening of Cip Clones Against Drought Tolerance

Dr. Mohammad Hossain
Chief Scientific Officer
Tuber Crops Research Centre, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur-1701, Bangladesh

Md. Mohidul Hasan
CIP Project Personnel
CIP-TCRC Bangladesh Agricultural Research Institute, Joydebpur, Gazipur-1701, Bangladesh

M. H. Reza
Bangladesh Agricultural Research Institute, Joydebpur, Gazipur-1701, Bangladesh

Abstract/ Executive Summary:

Fifteen CIP clones with check varieties Lalpakri, Lalashil and Diamant were evaluated at Bogra and Dinajpur during 2010-11 for their suitability against drought tolerance. Most of the CIP clones performed better against drought tolerance than the check varieties. Significant differences were observed among the clones/variety and between irrigation treatments in most traits. In general, as water stress increased, vegetative growth and tuber yield decreased. Considering yield and yield attributes, the CIP clone CIP-131 produced 48.43 t/ha with normal irrigation (three irrigation), on the other hand the same clone produced the highest (65.68 t/ha) yield under two irrigation at Bogra. At Dinajpur the highest yield was obtained from CIP-126 (62.10 t/ha) in normal irrigation, on the other hand same clone produced 65.15 t/ha under two irrigation. In both locations all CIP clones produced higher yield than check varieties irrespective number of irrigation at both locations under this trial.

Keywords: Potato, Drought Tolerance

Location: Bogra and Dinajpur

Start Date: 10-10-2010

End Date: 05-05-2011

Program Area: Risk Management in Agriculture

Non-commodity: Potato, Drought

Objectives:

To find out the drought tolerance CIP clones suitable for cultivation in Bangladesh

Methodology:

The experiments were conducted at two locations viz. Tuber Crops Research Sub-Center (TCRSC) Bogra and BRAC, Birol, Dinajpur. The protocol of drought tolerance trial has already been established at CPRI, India and the same protocol was followed in Bangladesh trials. At Bogra, 15 CIP clones (CIP-106, CIP-108, CIP-111, CIP-112, CIP-113, CIP-120, CIP-122, CIP-123, CIP-126, CIP-127, CIP-130, CIP-131, CIP-134, CIP-139 and CIP-142) and at Dinajpur, 15 CIP clones (CIP-108, CIP-111, CIP-112, CIP-113, CIP-118, CIP-120, CIP-122, CIP-123, CIP-126, CIP-127, CIP-130, CIP-131, CIP-134, CIP-139 and CIP-142) with three checks (Diamant, Lalshil and Lalpakri) were included for drought tolerance trial. Plant spacing: 60 cm X 20 cm; plot size: 1.2 m X 2.0 m; design: strip plot; replication: 3; distance between replication: 1 m; distance between Plots: 0.60 m; distance between treatments: 3 m; date of planting: 25.11.10 at both locations. There were three treatments; T1: One irrigation after 1st earthing up at 30 DAP, T2: Two irrigations after earthing up at 30 & 60 DAP and T3: Irrigation normal (3) as practiced by farmer. Fertilizers were applied @ 325-220-250-120 kg/ha of Urea, TSP, MP and Gypsum, respectively. Full amount of TSP, MP and Gypsum and 50% of urea were applied as basal and the remaining amount of urea was side dressed at 35 DAP. Weeding, spraying and other intercultural operations were done as and when necessary. The crop was harvested at 90 DAP. All the growth and yield contributing characters data were recorded and were statistically analyzed. Soil moisture was recorded by digital soil moister meter before irrigation. Canopy temperature was recorded by digital infrared thermometer. Plant vigor was recorded on 1-5 scale, where 1 is very poor vigor and 5 is highly vigorous. Senescence of the crop was recorded on 1 to 5 scale where, 5=0-20%; 4=21-40%; 3= 41-60%; 2= 61-80% and 1= 81-100%). Wilting of plants was also recorded on 1 to 9 scales where, 1 is fully expanded/no wilting and 9 is fully wilted. The crop was harvested on 26th & 28th February 2011 at Bogra & Dinajpur respectively.

Source of Information: TCRC Annual Report, 2010-11

Article Link (Online Journal):

Funding Source:

1.	Budget: 50000/-

Total Budget (Tk.) : 50000/-

Achievement/Findings:

In both locations all CIP clones produced higher yield than check varieties irrespective number of irrigation at both locations under this trial.

Knowledge Management: Report/Proceedings