Informatics Publishing Limited

S. Lata ¹, U. Mehta ¹

Affiliations
1 Department of Foods and Nutrition, Haryana Agricultural University, Hisar, IN

Abstract

Hypercholesterolemia and increased fasting plasma triglycerides are two of the principle indicators of risk of coronary (ischemic) heart disease (CHD). Diets low in animal fats and dietary cholesterol were used in the therapeutic trials leading to the fat hypothesis. These diets were also found to be with low ratio of zinc to copper.

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Ankita Sood ¹, Naresh Thakur ¹, S. Lata ¹

Affiliations
1 Department of Crop Improvement, CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur-176 062, IN

Abstract

Correlation and path coefficient among eleven agro-morphometric traits of forty maize inbred lines (14 QPM lines and 26 non- QPM lines) grown during kharif 2011 were studied. Correlation analysis revealed that grain yield exhibited significant positive association with 100-seed weight implying that improvement in grain yield can be obtained by improving the latter. Further, path coefficient analysis partitioned the correlation into direct and indirect effects. Path analysis revealed highest positive direct effect of days to 50% silking on grain yield, followed by cob girth and 100-seed weight; hence selection based on these characters would be more rewarding.

Keywords

Maize, Agro-Morphometric Traits, Correlation, Path Analysis.

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S. Lata ¹, C. Kapoor ², A. Kumar ³

Affiliations
1 Department of Crop Improvement, CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur-176 062, IN
2 ICAR Research Complex for North Eastern Hill Region, Sikkim Centre, Tadong, Gangtok, Sikkim-737102, IN
3 CSKHPKV Shivalik Agricultural Research and Extension Centre, Kangra, IN

Abstract

Maize (Zea mays L.) is one of the most important Kharif cereal crops of Himachal Pradesh. It is mainly used as food, feed, fodder and fuel in the State and is grown over a wide range of agro-climatic conditions. The importance of biotic stresses and their ever-increasing global concern cannot be underestimated. Losses occurring every year due to one reason or another are massive and invariably result in fluctuating production and market price. During the recent past the spread of different hybrids in the state has increased the severity of different diseases in maize. Most important among them are banded leaf and sheath blight caused by Rhizoctonia solani f.sp. sasakii and Bacterial stalk rot incited by Erwinia chrysanthemi pv zeae. The existing local maize biodiversity in the state is still rich in resistance to such diseases. To combat this rising problem, an effort was made to develop the inbred lines of maize from local germplasm showing resistance to these diseases. Twelve diverse inbred lines were crossed to three inbred testers in L x T design. These twelve inbred lines, three testers and resulting 36 hybrids along with a single cross hybrid Vivek 23 ( check) were evaluated under Randomized Complete Block Design under field conditions. The crosses L₁ x T₃, L₂ x T₂, L₂ x T₃, L₃ x T₂ and L₁₀ x T₁ were found to be resistant to Bacterial Stalk rot. All the inbred lines except L₁ and testers T₁ and T₂ were moderately resistant, while crosses L₄ x T₁, L₅ x T₃, L₆ x T₂, L₆ x T₃ and L₁₀ x T₂ were resistant to the banded leaf and sheath blight.

Keywords

Maize, Inbred, Hybrid, Bacterial Stalk Rot, Banded Leaf & Sheath Blight.

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Naresh Thakur ¹, S. Lata ¹, B. K. Sharma ², R. Devlash ³

Affiliations
1 Department of Crop Improvement, CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur - 176 062, IN
2 Department of Crop Improvement, CSK Himachal Pradesh Krishi Vishvavidyalaya, RSS, Akrot, IN
3 Department of Crop Improvement, CSK Himachal Pradesh Krishi Vishvavidyalaya, HAREC, Bajaura, IN

Abstract

Rhizoctonia solani, causal agent of banded leaf and sheath blight (BLSB) is widely distributed in the India in maize causing severe yield losses. In this study, a set was obtained by crossing ten QPM inbred lines in 10 × 10 diallel fashion (excluding reciprocals). In total sixty lines including parents, F₁'s, procured hybrids and standard check (HQPM-1 and Vivek QPM-9) were evaluated against banded leaf and sheath blight of maize under field conditions and artificial conditions during kharif 2016 and 2017, respectively. Data on reaction of maize genotypes to banded leaf and sheath blight under natural epiphytotic conditions revealed that the six parents viz., CML161, CML189, BAJIMQ-08-27, CML193, CML162 and CML171, one hybrid HQPM-7, one QPM check Vivek QPM-9 and forty one crosses were found to be moderately resistant. Under artificial epiphytotic condition thirteen crosses viz., BAJIMQ-08-27 × CML162, BAJIMQ-08-27 × CML161, CML162 × CML161, CML163 × CML161, CML170 × CML163, BAJIMQ-08-26 × CML171, CML193 × BAJIMQ-08-27, BAJIMQ-08-26 × CML161, CML193 × CML161, BAJIMQ-08-26 × CML163, BAJIMQ-08-27 × CML171, CML180 × CML161 and CML189 × CML163 showed moderately resistant reaction to BLSB; however, one cross was found susceptible (CML180 × BAJIMQ-08-27). These lines identified to possess low disease incidence score against BLSB in the present study could be used successfully in developing genotypes having desirable level of resistance in disease endemic areas to aim for sustainable productivity.

Keywords

Banded Leaf and Sheath Blight, Artificial, Natural, Epiphytotic, QPM.

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