Search Results

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

  • late blooming x
  • Refine by Access: All x
Clear All
Free access

Rafel Socias i Company, Ossama Kodad, José M. Alonso, and Antonio J. Felipe

The almond ( Prunus amygdalus Batsch) breeding program of the Centro de Investigación y Tecnología Agroalimentaria of Aragón aims to develop new self-compatible and late-blooming cultivars to solve the main problem detected in Spanish almond

Free access

Shengrui Yao, Junxin Huang, and Robert Heyduck

late May to June each year at a rate of 33–45 kg N/ha and irrigated weekly depending on season and precipitation. Jujube flower number and blooming type. In 2012, 10 jujube branchlets (flexible deciduous fruiting branches) ( Yao, 2012a ) were sampled

Open access

Shengrui Yao, Steve Guldan, and Robert Heyduck

Apricots are the first fruit species to bloom each spring in northern New Mexico, with blooming dates ranging from early to late March—or as late as 10 Apr. in 2010—depending on the cultivar and weather conditions each year. Apricot is well known

Full access

Laura Soler and Julián Cuevas

leaves. Hand or chemical defoliation can be carried out at different times, shifting the harvest date to a more lucrative period. The removal of senescent leaves weeks before natural abscission moderately advances harvest as a result of earlier blooming

Free access

Ellen Thompson, Bernadine C. Strik, John R. Clark, and Chad E. Finn

. 1 , “8”). On soft-tipped and untipped primocane inflorescences, it was common to have A 3 axes, and occasionally A 4 axes. Blooming of A 3 axes would begin simultaneously with the last opening of the flower on the upper-most A 2 axis, which was

Free access

Dongyan Hu and Ralph Scorza

years or sometimes do not flower at all), flowering time was useful for classifying Nn and NN trees and produced a segregation ratio of 2 ( Nn ):1 ( NN ) ( Table 4 ). The parental ‘A72’ ( Nn ) tree is late blooming. An association between ‘A72

Free access

David E. Zaurov, Thomas J. Molnar, Sasha W. Eisenman, Timothy M. Ford, Ravza F. Mavlyanova, John M. Capik, C. Reed Funk, and Joseph C. Goffreda

six categories depending on time of maturation, fruit size, and the ability of the fruit to dry on the tree. These include ‘Dzhaupazak’ (early-maturing), ‘Makhtoba’ (light-colored fruit), ‘Rukhi djuvanon miona’ (late-blooming), ‘Arzami’ (intense

Open access

Yu-Chun Chu and Jer-Chia Chang

, four uniform and high-vigor potted plants were selected for each treatment ( Fig. 1 ). Although ‘Da Hong’ can set fruit after blooming naturally, and there are 14–16 flowering waves during the natural reproductive period in Taiwan, only 1–2 flowers; and

Free access

Amy F. Iezzoni and Colleen A. Mulinix

Bloom times were evaluated for seedlings from four full-sib and 14 open-pollinated families of sour cherry (Prunus cerasus L.). Time of anthesis for individual seedlings ranged over 17and 16-day periods in 1989 and 1990, respectively. In both years, most seedlings bloomed later than `Montmorency', the only commercially important sour cherry cultivar in the United States. `Pitic de Iasi', the parent of the latest-blooming family, is a natural interspecific hybrid between sour cherry and the cold-hardy Russian ground cherry (P. fruticosa Pall.). Hybridization between sour and ground cherry and intense selection pressure in the colder areas of the sour cherry habitat may have favored selection of the late-blooming character.

Free access

Chantalak Tiyayon and Anita Nina Azarenko

Pollen development is an important event in plant reproduction. Hazelnut (Corylus avellana) male flower differentiation starts in summer and pollen shed is in the winter. Hazelnut pollen shed can vary up to 3 months between early to late flowering genotypes. Microsporogenesis and microgametogenesis of hazelnut is not well understood. Pollen development and differentiation of nine genotypes, representing early to late blooming cultivars from the National Clonal Germplasm Repository in Corvallis, Ore., were studied. Catkins were collected weekly from Aug. to Nov. 2002. Tissue sections were examined under the light microscope. Microsporogenesis was divided into five stages: archesporial cells, sporogenous cells and parietal layers, pollen mother cells (PMC), tetrads, and microspores. Microgametogenesis was distinguished between young pollen grains (uninucleate) and mature pollen grains (binucleate). On 4 Aug., cultivars were at different developmental stages of microsporogenesis. Early blooming cultivars had PMCs present. Later-blooming cultivars only contained archesporial cells. PMCs were present in all cultivars by 22 Aug. Microspores were observed on 26 Sept. in all cultivars. This study contributes to a better understanding of male gametophyte development in hazelnut, which has increased our ability to correlate hazelnut pollen development with bloom phenology.