general observation by the senior author that seed trees of ‘US-802’ are relatively less vigorous than the other three (contrary to the effect of ‘US-802’ to induce vigor on a scion grafted to it in the field), whereas seed trees of ‘US-942’ are relatively
pollinated with pollen from tetraploid V. stamineum. The number of plump seeds per pollinated flower was determined. Results Field nursery evaluations of F 1 , F 2 , and BC 1 seedling populations. Vigor of BC 1 seedlings on 14 Oct. 2016, after 149 d in
characteristics included flower and inflorescence morphology, plant vigor, berry size, berry color (wax, skin, and flesh), picking scar, stemminess, firmness, flavor, and tendency for berries to shatter when ripe. Seed germination and planting of the field
nitrogen ( Martins-Loução and Rodríguez-Barrueco, 1982 ). Carob beans and seeds are used for many purposes, including food, fodder, and for making industrial products such as gums, sugar, and alcohol ( Batlle and Tous, 1997 ; Calixto and Cañellas, 1982
orange ( Citrus aurantium L.) to determine the effect of different concentrations of Cr on seed germination, seedling growth, and antioxidant enzymes. Materials and Methods Plant materials and growth conditions Sour orange seeds were acquired locally
germination rate and stimulates seedling vigor of these grains ( Modi, 2002 ; Paasonen et al. 2003 ). In other studies, smoke-treated seeds of some vegetable crops such as lettuce ( Drewes et al., 1995 ) and celery ( Thomas and Van Staden, 1995 ) have also
Maturity at harvest determines seed viability and vigor. However, separating seeds from different stages of development can be difficult using existing seed sorting technologies. New technology non-destructively sorts seeds based on their chlorophyll fluorescence (CF), so seeds with the same dry weight but with different physiological maturates can be separated. We determined whether chlorophyll content of muskmelon (Cucumis melo L. cv. Top Mark) seeds changes during development and whether those changes were related to viability and vigor. Seed viability and vigor were determined using an Association of Official Seed Analysts wet paper towel germination test. `Top Mark' seeds from nine stages of development were run through the SeedMaster Analyzer (Satake USA Inc., Houston, Texas), which calculated the chlorophyll content of each seed. The CF signal was fed into a computer to obtain a frequency histogram. Forty, 45, and 55 days after anthesis (DAA) seeds had germination percentages of 96%, 98%, and 100%, respectively, the highest in the study. Fifty-five DAA had greater seed vigor and viability and contained the lowest CF values; 207 on the 1000-value scale. The less-mature seeds contained higher chlorophyll content and had the lowest seed vigor and viability. Seed vigor and chlorophyll content were negatively correlated in this study. All seeds with high CF values had low vigor, but not all seeds with low CF values have high vigor. Seed aging during storage can reduce viability and vigor independent of chlorophyll content. Based on chlorophyll content, the SeedMaster Analyzer can non-destructively remove immature, low-vigor seeds that have the same physical characteristics and weight as more mature seeds. Chlorophyll fluorescence technology may allow the seed industry to further improve seed quality and maximize vigor.
capacity as biostimulants to enhance seed germination and melon vigor; promote the growth and quality of melon seedlings under a conventional production system (35 d) and in a system called “big plant”; and their effect on the yield and fruit quality
characteristics, including plant vigor, flower number, flowering date, harvest date, runner density, fruit weight and color, seed set, and foliar disease resistance. A much larger sample of 270 genotypes of wild F . virginiana and F . chiloensis from the
that could facilitate hybridization between them, and record fruit yield and estimate seed production per plant among native and nonnative blue honeysuckles and invasive red-fruited honeysuckles. The results provide information regarding the competitive