نتایج جستجو برای: reproductive stage duration

تعداد نتایج: 636967  

Journal: :Journal of Bangladesh Academy of Sciences 2022

To understand the responsive nature to excess water, a pot experiment was conducted at different growth stages of sesame (Sesamum indicum L. cv. BARI Til-4). The waterlogging stress each stage set three durations, viz. 2, 4, and 6 days. Twelve treatment combinations were replicated times arranged in completely randomized design. Different morpho-physiological yield parameters measured after com...

Journal: :Dynamic Games and Applications 2013

Journal: :Evolution; international journal of organic evolution 2008
Jeffrey M Good Mary Ann Handel Michael W Nachman

House mice offer a powerful system for dissecting the genetic basis of phenotypes that isolate species in the early stages of speciation. We used a series of reciprocal crosses between wild-derived strains of Mus musculus and M. domesticus to examine F(1) hybrid male sterility, one of the primary phenotypes thought to isolate these species. We report four main results. First, we found significa...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2004
Laura K Reed Therese A Markow

Capturing the process of speciation early enough to determine the initial genetic causes of reproductive isolation remains a major challenge in evolutionary biology. We have found, to our knowledge, the first example of substantial intraspecific polymorphism for genetic factors contributing to hybrid male sterility. Specifically, we show that the occurrence of hybrid male sterility in crosses b...

A greenhouse factorial experiment was conducted in completely randomized design (CRD) with three replications to investigate the effect of soil Zn deficiency stress on the expression of three genes involved in the synthesis of metal chelating agents (NAS1, NAS2 and NAS3) in bread wheat. Hamoun and Hirmand (Zn-efficient and inefficient cultivars, respectively) cultivars were planted under Zn def...

Journal: :پژوهش های حبوبات ایران 0
فریده سادات حسینی احمد نظامی مهدی پارسا کمال حاج محمدنیا قالی باف

supplementary irrigation is a key factor in dryland production of lentil (lens culinaris medik.). in order to study the effects of supplementary irrigation on phenological and morphological characters of three lentil (lens culinaris medik.) cultivars, a trial carried out as split block based on randomized complete block design with three replications at research field of agricultural college, f...

2006
Jin-Jun Wang Jian-Ping Zhang Lin He Zhi-Mo Zhao

Development, reproduction and acaricide susceptibility of Tetranychus cinnabarinus (Boisduvals) (Acari: Tetranychidae) were investigated after long-term (about 40 generations) exposure to various levels of acid rain; pH 2.5, 3.0, 4.0, and 5.6. Deionized water (pH 6.8) served as a control. The mites were reared on eggplant leaves at 28 degrees C, 80%RH and a photoperiod of 14:10 (L:D) in the lab...

2009
Peter Levai Vladimir Skokov

In the framework of Wigner function formalism we investigated strange and charm quark-pair production in the early stage of heavy ion collisions. According to our model the particle production is initiated by an external time-dependent color field, that simulates an overlap of two colliding ions and color charge separation. The calculations were performed in an SU(2)-color model with finite cur...

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