Results 281 to 290 of about 2,785,401 (324)

Nitrogen and phosphorus runoff losses were influenced by chemical fertilization but not by pesticide application in a double rice-cropping system in the subtropical hilly region of China.

Science of the Total Environment, 2020
As one of the important nitrogen (N) and phosphorus (P) pollution sources of waters, the paddy water N and P runoff losses are still poorly understood in the double rice cropping system under the interaction of chemical fertilizer and pesticide.
J. Liu, Xiuqin Ouyang, Jianlin Shen, Yong Li, Wanru Sun, Wenqian Jiang, Jinshui Wu   +6 more
semanticscholar   +1 more source

Double fertilization in vitro and the origin of human chimerism

Fertility and Sterility, 1990
A human embryo consisting of two cells, each containing two pronuclei, was found in the IVF laboratory. The most likely explanation for this phenomenon is a parthenogenetic activation of an oocyte leading to immediate cleavage and followed by double fertilization. Human chimerism may originate in this way.
S J, Van de Leur, G H, Zeilmaker
openaire   +2 more sources

Fertility of doubled monoploids ofSolanum phureja

American Potato Journal, 1992
Thirteen anther-derived doubled monoploids and their heterozygous diploid anther donor were evaluated in the greenhouse for flowering, fruit set, seed set and pollen fertility. Doubled monoploids varied for number of days to flower, duration of flowering, abundance of flowers and general flower quality. Fruit set on the doubled monoploids in controlled
H. Kaburu M’Ribu, Richard E. Veilleux
openaire   +1 more source

Long-term fertilization on nitrogen use efficiency and greenhouse gas emissions in a double maize cropping system in subtropical China

Soil & Tillage Research, 2018
Fertilizer application often significantly affects soil quality and crop productivity, thus, can affect soil greenhouse gas (GHG) emissions and nitrogen use efficiency (NUE) as well.
D. Afreh, Jun Zhang, Dahai Guan, Kailou Liu, Zhenwei Song, C. Zheng, A. Deng, Xiaomin Feng, Xin Zhang, Yan Wu, Qian-ru Huang, Weijian Zhang   +11 more
semanticscholar   +1 more source

Cell–cell communication during double fertilization

Current Opinion in Plant Biology, 2006
Double fertilization in flowering seed plants requires intercellular signaling events between many interacting partners. The four cell types of the seven-celled female gametophyte communicate with each other to establish and maintain their identity. They secrete signaling molecules to guide the male gametophyte and to mediate sperm cell discharge and ...
openaire   +2 more sources

Flowering and Double Fertilization

This chapter assesses flowering and double fertilization. Flowering at the correct time of the year is crucial for the reproductive fitness of the plant. The transition to flowering involves major changes in the pattern of morphogenesis and cell differentiation at the shoot apical meristem (SAM).
Lincoln Taiz, Ian Max Møller, Angus Murphy, Wendy A. Peer   +3 more
openaire   +1 more source

Double Delivery During Plant Fertilization

Science, 2012
The cysteine-rich proteins of Arabidopsis egg and central cells enable fusion with just one sperm each.
openaire   +2 more sources

Double translocation heterozygosity and normal fertility in domestic sheep

Cytogenetic and Genome Research, 1974
Intermating of sheep heterozygous for what was believed previously to be two different submetacentric translocations (Massey I and Massey III) and subsequent meiotic studies on one of the ram progeny have confirmed that these translocations are completely nonhomologous.
A N, Bruère, H M, Chapman
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Double Fertilization and Development of the Seed in Angiosperms

Botanical Gazette, 1940
1. Following self-pollination in alfalfa, 34.4 per cent of the fertile ovules collapsed during the first 144 hours as compared with only 7.1 per cent after cross-pollination. 2. Fertile ovule collapse is associated with excessive growth of the inner integument.
R. A. Brink, D. C. Cooper
openaire   +1 more source

A gynandromorphic grasshopper produced by double fertilization

Australian Journal of Zoology, 1968
An individual of the large grasshopper Valanga irregularis (Walker) which exhibited bilateral gynandromorphism, is described. The entire right side was female, the left side being male. The colour pattern on the two sides was completely different, the male side corresponding to the concolorous phenotype, the female side to the contrasty one.
openaire   +1 more source