Results 101 to 110 of about 3,096 (199)
The Scientific World Journal, 2012 We studied several flowering traits, namely, male-female cone phenology, male-female cone production per tree, mating system, sex ratio, air-borne pollen grains and pollen migration, over four successive years in two different natural populations of P ...
Chandra Mohan Sharma +2 more
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Flower Longevity and Protandry in Two Species of Gentiana (Gentianaceae)
Annals of the Missouri Botanical Garden, 1987 Both Gentiana saxosa and G. serotina are protandrous. When flowers open, pollen is presented extrorsely around the closed stigma for one to six days. As the stigma opens, the stamens curve toward the corolla lobes. The length of the female phase, and therefore reproductive flower life, is determined by pollination, although in both species the corolla ...
C. J. Webb, Jan Littleton
openaire +2 more sources
Anais da Academia Brasileira de Ciências, 2013 This study aimed to detail the temporal and morphological parameters of the immature stages of Spodoptera albula (Walker 1857) under controlled conditions (25 ± 1°C, 70 ± 10% RH and 14 hour photophase) and to gather information about their larval host ...
DÉBORA G. MONTEZANO +8 more
doaj +1 more source
The fauna of brackish ponds at Port Canning, lower Bengal : Part VII: further observations on the Polyzoa, with the description of a new genus of Entoprocta [PDF]
, 2009 A considerable change has taken place in the Polyzoa of the ponds this winter, apparently owing to last summer's floods, which broke down the embankment that separated the ponds from the river, joining thelll together temporarily.
Annandale, Nelson
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Agronomy ScienceThe phenomenon of male sterility in higher plants is, apart from protandry (earlier maturation of stamens), protogyny (earlier maturation of pistils), heterostyly (different stigmas) and self-incompatibility, one of the evolutionarily conditioned ...
Monika Żurek
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Omni-Akuatika, 2017 Pacific oyster (Crassostrea gigas) is an invasive species which is able to adapt a wide range of environmental conditions. The study was conducted from August to October 2014.
Selia Hermawati +2 more
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Viabilidad de polen e irregularidades meióticas en una colección de stevia rebaudiana (Bertoni) Bertoni cultivada en Tucumán, Argentina [PDF]
, 2018 Stevia rebaudiana (Bertoni) Bertoni (2n=2x=22) (Asteraceae family) is a species of economic value due to the presence of steviol glycosides in leaves -mainly stevioside and rebaudioside A- which are non-caloric sugars.
Budeguer, Carlos Jorge +2 more
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Grape variety affects larval performance and also female reproductive performance of the European grapevine moth Lobesia botrana (Lepidoptera: Tortricidae) [PDF]
, 2017 For insect herbivores, the quality of the larval host plant is a key determinant of fitness. Therefore, insect populations are supposed to be positively correlated with the nutritional quality of their host plant. This study aimed to determine if and how
Benrey, B., Moreau, J., Thiéry, D.
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Agronomic Behavior of Eighteen Pecan Cultivars in Southern Uruguay
Agrociencia UruguayThe cultivation of pecan has been expanding in Uruguay for over 10 years. Given the lack of knowledge about its management and behavior under local conditions, the objective was to evaluate the viability and productive potential of different pecan ...
Paula Conde-Innamorato +3 more
doaj +1 more source
Sexes in sync: phenotypic plasticity, sexual selection and phenological synchrony between the sexes in a wild hibernator. [PDF]
Proc Biol Sci, 2023 Thompson MJ +5 more
europepmc +1 more source