Search Results

You are looking at 1 - 10 of 277 items for :

Clear All

such as rate of crop maturity, bulb size and color, clove size and number, leaf number and color, and bolting habit. Variation observed in genetic diversity studies using molecular markers is as wide as that observed for phenotypic variation among the

Free access

. ) ( Nemli et al., 2014 ), and heat tolerance in cowpea ( Lucas et al., 2013 ). Some of the major agronomic traits of interest in spinach are bolting, plant height, and leaf erectness. Bolting is an important trait to consider in relation to developing

Free access

propensity to “bolt” or initiate rapid stem elongation from the rosette and flower under certain environmental conditions, causing the leaves to assume an unpleasant flavor ( Bashtanova and Flowers, 2011 ). This averse flavor, which is most likely due to

Open Access

regarding the number of treatments and frequency of AVG application are given in Table 1 . Plants treated with 5 ml of an aqueous solution containing 0.02% Break-Thru alone were kept as a control. Inflorescences emerged in the leaf whorl, defined as bolting

Free access

Growers of early stalk celery (Apium graveolens var. dulce) often experience financial losses due to bolting (the premature and rapid elongation of the main celery stem) in temperate regions. A method was developed to provide early warning of bolting in field-grown celery, on the basis of two criteria, one visual and one microscopic, for inflorescence development. Bolting could be detected 40 days after transplanting using the visual criterion, and as early as 30 days after transplanting using the microscopic criterion. Early detection of bolting using the visual and microscopic criteria provided celery growers with periods of, respectively, 25 days and up to 35 days to consider harvesting earlier, before the length of the celery stems exceeded commercial standards. This method could be effective in minimizing financial losses due to bolting when coupled with agro-economic studies.

Full access

Abstract

Bolting (premature production of flowers or seeds) of leaf lettuce (Lactuca sativa L.) results in elongated seedstalks and bitter leaves (1). Seed companies often refer to differences in bolting in their advertisements for leaf lettuce cultivars. However, scientific studies that substantiate or refute these claims are not readily available.

Open Access

1999 ), and lettuce is more prone to physiological disorders such as bolting and tipburn ( Jenni and Hayes 2010 ; Jenni and Yan 2009 ; Ryder 1999 ). In addition to temperature, bolting is affected in part by daylength, because lettuce is a species

Open Access

is one of the main factors affecting the germination and growth rate of lettuce ( Wien 1997 ). Higher temperatures often reduce lettuce yield and cause physiological disorders such as premature bolting, tipburn, and ribbiness ( Lafta et al. 2017

Open Access

physiological disorders like rib discoloration, tipburn, premature bolting, and ribbiness ( Jenni, 2005 ; Jenni and Hayes, 2010 ; Jenni and Yan, 2009 ; Ryder, 1999 ). Rib discoloration is present in leaves as lettuce being exposed to warm conditions. This

Open Access

bolting resistance. Yield has been included in a majority of studies and is considered to be a key component of cultivar selection ( Dainello et al., 1987 ; Djurovka et al., 1988 ). The presence of dark green color in spinach is an important aspect of

Full access