Evaluation of Loofah Lines for Resistance to Tomato Leaf Curl New Delhi Virus and Downy Mildew, as well as Key Horticultural Traits
Two loofah (<i>Luffa</i>) species, the ridge gourd (<i>Luffa acutangula</i> (L.) Roxb.) and the sponge gourd (<i>L. cylindrica</i> (L.) M. Roem.; syn. <i>L</i>. <i>aegyptiaca</i>), are cultivated widely in Asia by smallholder famers. Both s...
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MDPI AG
2020-07-01
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| Online Access: | https://www.mdpi.com/2077-0472/10/7/298 |
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| author | Narinder P. S. Dhillon Mohammed Abu Taher Masud Somchit Pruangwitayakun Monpapa Natheung Suyuporn Lertlam Robert L. Jarret |
| author_facet | Narinder P. S. Dhillon Mohammed Abu Taher Masud Somchit Pruangwitayakun Monpapa Natheung Suyuporn Lertlam Robert L. Jarret |
| author_sort | Narinder P. S. Dhillon |
| collection | DOAJ |
| description | Two loofah (<i>Luffa</i>) species, the ridge gourd (<i>Luffa acutangula</i> (L.) Roxb.) and the sponge gourd (<i>L. cylindrica</i> (L.) M. Roem.; syn. <i>L</i>. <i>aegyptiaca</i>), are cultivated widely in Asia by smallholder famers. Both species have significant economic and nutritional importance. However, Tomato leaf curl New Delhi virus (ToLCNDV) and downy mildew (DM) caused by <i>Pseudoperonospora cubensis</i> are important biotic constraints to loofah production throughout Asia. Loofah landrace-derived breeding lines, developed at the World Vegetable Center (WorldVeg), were evaluated at the WorldVeg East and Southeast Asia Research and Training Station, Kasetsart University, Kamphaeng Saen, Thailand—where natural epidemics of ToLCNDV and DM regularly occur. The lines were also evaluated for other commercially important horticultural traits such as days to 50% staminate and pistillate flowering, fruit color, fruit bitterness, and market segment classification. Thirteen and 59 lines of ridge gourd and sponge gourd, respectively, were determined to be resistant to both ToLCNDV and DM. These lines covered all market segments of loofah and exhibited variability for all of the evaluated horticultural traits. The results of these evaluations and their implications on loofah breeding are discussed. |
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| series | Agriculture |
| spelling | doaj.art-ee31a882f2a447a49505188acb8ae9142023-11-20T06:48:30ZengMDPI AGAgriculture2077-04722020-07-0110729810.3390/agriculture10070298Evaluation of Loofah Lines for Resistance to Tomato Leaf Curl New Delhi Virus and Downy Mildew, as well as Key Horticultural TraitsNarinder P. S. Dhillon0Mohammed Abu Taher Masud1Somchit Pruangwitayakun2Monpapa Natheung3Suyuporn Lertlam4Robert L. Jarret5World Vegetable Center, East and Southeast Asia, Kasetsart University, Kamphaeng Saen, Nakhon Pathom 73140, ThailandVegetable Division, Horticultural Research Center, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur 1701, BangladeshWorld Vegetable Center, East and Southeast Asia, Kasetsart University, Kamphaeng Saen, Nakhon Pathom 73140, ThailandWorld Vegetable Center, East and Southeast Asia, Kasetsart University, Kamphaeng Saen, Nakhon Pathom 73140, ThailandWorld Vegetable Center, East and Southeast Asia, Kasetsart University, Kamphaeng Saen, Nakhon Pathom 73140, ThailandU.S. Department of Agriculture, Agricultural Research Service, Plant Genetic Resources Conservation Unit, 1109 Experiment St., Griffin, GA 30223, USATwo loofah (<i>Luffa</i>) species, the ridge gourd (<i>Luffa acutangula</i> (L.) Roxb.) and the sponge gourd (<i>L. cylindrica</i> (L.) M. Roem.; syn. <i>L</i>. <i>aegyptiaca</i>), are cultivated widely in Asia by smallholder famers. Both species have significant economic and nutritional importance. However, Tomato leaf curl New Delhi virus (ToLCNDV) and downy mildew (DM) caused by <i>Pseudoperonospora cubensis</i> are important biotic constraints to loofah production throughout Asia. Loofah landrace-derived breeding lines, developed at the World Vegetable Center (WorldVeg), were evaluated at the WorldVeg East and Southeast Asia Research and Training Station, Kasetsart University, Kamphaeng Saen, Thailand—where natural epidemics of ToLCNDV and DM regularly occur. The lines were also evaluated for other commercially important horticultural traits such as days to 50% staminate and pistillate flowering, fruit color, fruit bitterness, and market segment classification. Thirteen and 59 lines of ridge gourd and sponge gourd, respectively, were determined to be resistant to both ToLCNDV and DM. These lines covered all market segments of loofah and exhibited variability for all of the evaluated horticultural traits. The results of these evaluations and their implications on loofah breeding are discussed.https://www.mdpi.com/2077-0472/10/7/298<i>Luffa acutangula</i><i>Luffa cylindrica</i>Tomato leaf curl New Delhi virusdowny mildewresistancefruit traits |
| spellingShingle | Narinder P. S. Dhillon Mohammed Abu Taher Masud Somchit Pruangwitayakun Monpapa Natheung Suyuporn Lertlam Robert L. Jarret Evaluation of Loofah Lines for Resistance to Tomato Leaf Curl New Delhi Virus and Downy Mildew, as well as Key Horticultural Traits Agriculture <i>Luffa acutangula</i> <i>Luffa cylindrica</i> Tomato leaf curl New Delhi virus downy mildew resistance fruit traits |
| title | Evaluation of Loofah Lines for Resistance to Tomato Leaf Curl New Delhi Virus and Downy Mildew, as well as Key Horticultural Traits |
| title_full | Evaluation of Loofah Lines for Resistance to Tomato Leaf Curl New Delhi Virus and Downy Mildew, as well as Key Horticultural Traits |
| title_fullStr | Evaluation of Loofah Lines for Resistance to Tomato Leaf Curl New Delhi Virus and Downy Mildew, as well as Key Horticultural Traits |
| title_full_unstemmed | Evaluation of Loofah Lines for Resistance to Tomato Leaf Curl New Delhi Virus and Downy Mildew, as well as Key Horticultural Traits |
| title_short | Evaluation of Loofah Lines for Resistance to Tomato Leaf Curl New Delhi Virus and Downy Mildew, as well as Key Horticultural Traits |
| title_sort | evaluation of loofah lines for resistance to tomato leaf curl new delhi virus and downy mildew as well as key horticultural traits |
| topic | <i>Luffa acutangula</i> <i>Luffa cylindrica</i> Tomato leaf curl New Delhi virus downy mildew resistance fruit traits |
| url | https://www.mdpi.com/2077-0472/10/7/298 |
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