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at equivalent protein contents. In recent years, there has been increasing interest in breeding cowpea cultivars with high seed protein content to improve nutritional quality. Evaluation of seed protein content in cowpea germplasm will help plant

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( Bandyopadhyay et al., 2011 ; Omane et al., 2012 ). In Hawai‘i, there was a need to evaluate the existing taro germplasm for resistance to TLB. Recent breeding programs have crossed TLB-resistant cultivars from other areas of the world with commercial cultivars

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Field experiments were conducted from 1980-1983 to evaluate sweetpotato [Ipomoea batatas (L.) Lam.] germplasm for photosynthetic efficiency, harvest index [HI; (storage root dry matter/total plant dry matter) × 100], and yield. Most genotypes maintained leaf area index (LAI) above five until final harvest, 164 days after planting (DAP). The higher LAI (> 8) for PI 318859, PI 344134, and PI 308205 compared to the other genotypes was maintained at the expense of the storage root development. Single leaf net photosynthesis (Pn) of the genotypes ranged from 0.61 to 1.09 mg CO2/m2 per sec during 1980. Canopy photosynthesis on a ground area (CPn-Ga) basis ranged from 0.95 to 1.56 and 1.04 to 1.30 mg CO2/m2 per sec during July and August 1983, respectively. Canopy photosynthesis expressed on leaf dry-weight (CPn-Dwt) basis was higher for PI 344122 than the other genotypes, except PI 344138, indicating its superior photosynthetic efficiency. Photosynthetic efficiency and stomatal conductance were not related to yield. Stomatal conductance and CPn-Ga were significantly correlated. Harvest index differed significantly at each sampling and ranged from 14.0% to 75.5% at final harvest. Fresh storage root yield for 1983 and 4-year mean yield ranged from 8.6 to 60.1 and 14.1 to 42.2 t·ha-1 respectively. At final harvest, HI correlated significantly with fresh-(r = 0.91) and dry-matter storage root yield (r = 0.95). Despite significant photosynthetic variations among the genotypes, sweetpotato yield was influenced more by HI and storage root sink strength than by photosynthetic efficiency.

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-yielding germplasms and breeding high-yield cultivars. The evaluation of factors most related to oil yield can be useful in selecting and developing germplasms with high oil yield. Generally, oil palm fruit can be divided into exocarp, mesocarp, endocarp (shell), and

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field, as occurred in Florida in 1992–93 and in 2010. Therefore, efforts need to be made to screen additional cultivars and germplasm lines for new sources of resistance. Two types of experiments (field and greenhouse) have been used to evaluate lettuce

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Based on our investigation of hazelnut germplasm and Thompson's evaluation system for European hazelnuts, an in-depth study on character description of hazelnut germplasm was conducted from 1991 to 1994. Eighty characters were evaluated for the 58 tested species. It was found that eight characters should be eliminated from Thompson's system, such as annual branch length and hair, lentical color, and serration depth. The best leaf sampling position, sample volumes for quantitative characters, and scoring standards were also determined. Therefore, an advanced evaluation system for hazelnut germplasm was developed. The advanced system is easier and simpler, and will significantly expedite systematical studies of hazelnut germplasm.

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time-consuming and requires large-scale phenotyping to identify germplasm materials/accessions with resistance and/or tolerance traits. No cultivars resistant to CuLCrV were identified during a recent study evaluating 20 C. pepo cultivars ( Candian et

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and consumer acceptance of spinach. A breeding program for improvement must start from germplasm evaluation to identify sources of low oxalate content. This experiment was conducted to screen the USDA spinach germplasm collection for oxalate

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evaluated as good sources of resistance. None of the V. vinifera cultivars tested were considered resistant, although the author mentioned that V. vinifera cultivars, including ‘Gulabi’ (synonym of ‘Muscat Hamburg’; Gurme and Kore, 1977 ), ‘Golden City

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., 2014 ). Selection of plants with less severe IYS symptoms occurred in both the IYS evaluation studies in New Mexico ( Cramer et al., 2014 ) and Colorado ( Boateng et al., 2014 ). The objective of this research was to evaluate onion germplasm that may

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