MSc

The project entitled "Nutrient profiling of yard long bean [Vigna unguiculata
subsp. sesquipedalis (L.) Verdcourt] genotypes" was carried out at the Department of
Vegetable Science, College of Agriculture, Vellayani, during 2020–2022, to analyze
the nutrient composition in green pods of yard long bean genotypes and to identify of
the best genotype based on nutrient content.
The experimental material consisted of 20 yard long bean genotypes, which was
laid out in RBD with two replications. Analysis of variance revealed significant
difference for all the characters studied among the twenty genotypes expect for sodium
content. Among the genotypes, the highest pod length was observed for KAU Deepika
(66.25 cm) and Kanjikuzhipayar (64.45 cm), FH-7 (63.60 cm) and NS- 621 (61.50 cm)
being statistically on par with it. The highest pod girth was recorded in NS 621 (4.20
cm), which was on par with Supreme (3.80 cm) and Kanjikuzhipayar (3.80 cm). The
highest pod weight of 33.60 g was recorded by FH 7, which was on par with
Kanjikuzhipayar (32.45 g) and KAU Deepika (31.25 g). The highest number of pods
per plant was recorded in Githika (47.00). VS 38 (46.00), Manjari (45.00), VS 54
(44.00) and KMV 1 (43.50) were on par with it. The highest yield per plant of 1087.15
g was recorded by Githika which was on par with KAU Deepika (1031.52 g).
The highest moisture content of 89.77 % was recorded by NS 621 which was
on par with FH 7 (89.53 %), Supreme (88.55 %), Kanjikuzhipayar (87.94 %), KAU
Deepika (89.94 %) and Vellayani Jyothika (87.47 %). The lowest fat content was
recorded in KAU Mithra (1.15 %) which was statistically on par with KAU Deepika
(1.25 %), VS 16 (1.25 %), Supreme (1.35 %), Malika (1.40 %) and Lola (1.40 %). The
lowest carbohydrate content was recorded in Lola (6.69 %) which was on par with VS
54 (7.05 %), Arka Mangala (7.15 %), Sharika (7.23 %), KMV 1 (7.27 %) and Harry
(7.27 %). The highest ash content of 0.91 % was recorded in Vellayani Jyothika. The
highest crude fibre content was observed in Lola (1.90 %) which was on par with VS
54 (1.90 %), Harry (1.86 %) and Vyjayanthi (1.85 %). The highest crude protein content
was recorded by Arka Mangala (34.12 %). Kanjikuzhipayar (31.93 %), Manjari (31.81
%) and KAU Mithra (31.805 %) were found to be statistically on par with it.
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The highest beta carotene of 512.87 µg 100 g-1 was recorded in Vyjayanthi. The
genotype KMV 1 recorded the highest vitamin B1 content of 0.94 mg 100 g-1
of dry
weight. Githika (0.92 mg 100 g-1
of dry weight) and Lola (0.900 mg 100 g-1
of dry
weight) were on par with it. The highest vitamin B2 and vitamin B3 contentwas recorded
in Githika (0.40 mg 100 g-1
of dry weight and 2.21 mg 100 g-1
of dry weight
respectively). Vitamin C content was the highest in Noori (26.28 mg 100 g-1
of fresh
weight) which was statistically on par with Vyjayanthi (25.96 mg 100 g-1
of fresh
weight), KAU Deepika (25.96 mg 100 g-1
of fresh weight), Githika (25.96 mg 100 g-1
of fresh weight), FH 7 (25.96 mg 100 g-1
of fresh weight) and Vellayani Jyothika (25.32
mg 100 g-1
of fresh weight).
The highest potassium content of 1.83 % was recorded in Manjari. Two
genotypes, viz., Kanjikuzhipayar (1.80 %) and Noori (1.75 %) were on par with it.
Githika recorded the highest phosphorous content of 0.60 % which was on par with VS
38 (0.55 %). Vyjayanthi registered the highest magnesium content (0.63 %), which was
on par with VS 16 (0.54 %), Githika (0.54 %), Manjari (0.48 %), VS 38 (0.48 %) and
VS 54 (0.48 %). The highest iron content of 190.00 ppm was observed in VS 54, being
on par with Lola (185.00 ppm). The highest zinc content was recorded in Manjari (82.50
ppm). FH 7 (77.50 ppm) and VS 54 (75.00 ppm) were found to be statistically on par
with it.
The lowest phytic acid content was recorded in Lola (825.63 mg 100 g1
).Vyjayanthi (832.69 mg 100 g-1
), KAU Deepika (853.91 mg 100 g-1
), Githika (853.94
mg 100 g-1
), Sharika (853.94 mg 100 g-1
) and NS 621 (859.24 mg 100 g-1
) was found
to be statistically on par with it.The lowest oxalate content was recorded in Supreme
(2.20 mg g-1
), which was statistically on par with Kanjikuzhipayar (2.25 mg g-1
), Arka
Mangala (2.30 mg g-1
), Sharika (2.35 mg g-1
) and KAU Deepika (2.70 mg g-1
). The
highest antioxidant content was recorded in Vellayani Jyothika (94.05 %).
Arka Mangala recorded the highest mean score for colour/appearance and
doneness. Highest mean score for flavour and taste was recorded in NS 621. The lowest
bitterness was also recorded in NS 621.
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High phenotypic and genotypic coefficients of variation coupled with high
heritability and high genetic advance was recorded for the characters pod length, pod
weight, pods/plant, yield/plant, ash, vitamin B1, vitamin B2, Vitamin B3, potassium,
phosphorous, iron and zinc.
The genotypes were ranked based on selection index score considering the
characters viz., carbohydrate, crude fibre, crude protein, beta carotene, vitamin B1,
vitamin B2, vitamin B3, potassium, calcium, iron and antioxidant. Lola recorded the
highest selection index score of 824.222 followed by Vyjayanthi (804.255) and VS 54
(789.976). The best genotype based on nutrient content was Lola, which recorded the
highest crude fibre content, high vitamin B1 and iron content and the lowest
carbohydrate and phytic acid content.